PLEASE ANSWER PART A, B, and C
A child slides down a hill on a toboggan with an acceleration of 2.0 m/s².
Part A If she starts at rest, how far has she traveled in 1.0 s? Express your answer using two significant figures. VE ΑΣ

The difference in height between the water columns on the left-hand and right-hand sides of the tube can be found using the principle of continuity of fluid flow. Applying this principle to the two points in the tube, we can write the following equation: A1 * v1 = A2 * v2

Where A1 is the cross-sectional area at point 1, v1 is the velocity of the fluid at point 1, A2 is the cross-sectional area at point 2, and v2 is the velocity of the fluid at point 2.

Since the fluid is water and is at rest, we can assume that the velocity of the fluid at both points is zero and the equation becomes:

A1 = A2 * h2 / h1

Therefore:

h2 = (A1 * h1) / A2

h2 = (2.00 cm2 * h1) / 1.00 cm2

h2 = 2h1

The principle of continuity of fluid flow states that what flows into a defined volume in a defined time, minus what flows out of that volume in that time, must accumulate in that volume.

The continuity mode has a diode symbol, which is a triangle with a line on the right side.

To know more about fluids, visit here:

https://brainly.com/question/21708739

#SPJ4

In the experiments of discovering electricity, I and II, at the beginning of the chapter, objects such as paper bits, feather, and pith ball are attracted to a plastic rod rubbed with wool.

In the experiments of discovering electricity I and II, which are commonly performed to demonstrate static electricity, certain objects can be attracted to a plastic rod when it is rubbed with wool. This phenomenon occurs due to the transfer of electric charge between the plastic rod and the wool.

When the plastic rod is rubbed with wool, electrons are transferred from the wool to the rod, causing the rod to become negatively charged. As a result, objects with a positive charge or neutral objects are attracted to the negatively charged rod. In the mentioned experiments, objects like paper bits, feather, and pith ball are typically used to demonstrate this attraction.

The electrical attraction between the plastic rod and the objects is a result of the redistribution of electric charge and the resulting electrostatic forces.

To know more about electrostatic force, refer here:

https://brainly.com/question/31042490#

#SPJ4

The force of the string at the bottom is greater than the weight of the ball. The correct option is B.

When two or more forces are acting on the system of objects, then the to attain equilibrium, net force must be zero.

A girl at a state fair swings a ball in a vertical circle at the end of a string.

When the ball is at the bottom, the force acting will be

The tension in the string , T = mass x centripetal acceleration + Force of gravity

So, T = m x ac + mg

The tension in the cable at the bottom will have centripetal force and weight forces acting on it.

Thus, the force of the string at the bottom is greater than the weight of the ball.

Learn more about net force.

https://brainly.com/question/18031889

#SPJ1

Answer:

Momentum is conserved.

All of the others are not conserved because of heat loss caused by deformation, etc.

The new velocity of the object after the event is 7.99m/s.

We are given that,

Mass = m = 50kg

Initial velocity = v = 11.2m/s

Energy = E = 1539j

The kinetic energy of object can be calculated as,

K= (1/2)mv²

K = (50×125.44)/2

K = 3136J

Consequently, since both the initial kinetic energy and the total amount of energy transferred are known. The article's resulting energy is easily discernible.

Final energy = initial kinetic energy - the ending energy

Final energy  = 3136-1539= 1597 joules

Therefore, using the equation for kinetic energy derivation, the speed of the object can now be determined.

K.E = 1/2MV²

1597 = 50/2V²

3194 = 50V²

V = 7.99m/s

Therefore , the new velocity of the object after the event would be 7.99m/s.

To know more about velocity

https://brainly.com/question/24926862

#SPJ4

Answer:

I'M SORRY I CAN'T SEE THE PICTURE BUT IT WILL MOST LIKELY BE THE DIFFERENCE BETWEEN THE NUMBERS

Explanation:

for instance if there was someone pushing a desk with a net force of 9 towards the right, the net force would come to a total of 9 since there is no one on the other side pushing the desk. Meaning the desk would go right. I'm sorry if this isn't what you needed D:

The mass of the string must be approximately 60 grams so that a wave pulse sent down the string takes 0.221 s to travel 2 meters.

A wave pulse is a single disturbance traveling through a medium from one point to another. The wave pulse is an example of a non-periodic wave. When you shake a string, it generates a wave pulse that travels from one end to the other. The wave pulse may take on a variety of shapes, but the velocity is always the same.

When a wave pulse travels down a string, the velocity is related to the tension in the string and the string's mass. The velocity of the wave pulse is independent of the amplitude and frequency of the wave pulse.

The speed of a wave on a string is given by the equation:

\(v = \sqrt{T/\mu }\)

where v is the speed of the wave, T is the tension in the string, and μ is the linear mass density of the string (mass per unit length).

In this case, the wave pulse travels a distance of 2 meters in 0.221 seconds, so the speed of the wave is:

\(v = d/t = 2 m / 0.221 s =9.05 m/s\)

Assuming that the tension in the string is caused only by the hanging mass, we can use the equation for tension:

T = mg

where m is the mass of the hanging mass and g is the acceleration due to gravity.

Therefore, the linear mass density of the string can be found by rearranging the equation for wave speed:

\(\mu = T/v^2 = mg / v^2\)

Substituting the given values, we get:

\(\mu= (0.250 kg \times 9.81\  m/s^2) / (9.05\  m/s)^2 = 0.03\  kg/m\)

So the closest estimate for the mass of the string is approximately 0.03 kg/m, assuming a uniform linear mass density.

The total mass of the string = 0.03 x 2 = 0.06 kg = 60 gm.

Learn more about tension:

https://brainly.com/question/24994188

#SPJ11

Answer: Weak nuclear forces are involved when certain types of atoms break down. Strong nuclear forces are responsible for holding atoms' nucleus together.

Rotational Kinetic Energy = (1/2) * I * ω^2

The rotational kinetic energy of a rotating object can be calculated using the formula:

Rotational Kinetic Energy = (1/2) * I * ω^2

where:

I is the moment of inertia of the object

ω is the angular velocity of the object

To find the moment of inertia (I) of the neutron star, we need to use the formula for the moment of inertia of a solid sphere:

I = (2/5) * M * R^2

where:

M is the mass of the object

R is the radius of the object

Given:

Mass of the neutron star, M = 2 × 10^30 kg

Radius of the neutron star, R = 11.1 km = 11.1 × 10^3 m

We first convert the radius to meters:

R = 11.1 × 10^3 m

Next, we calculate the moment of inertia (I):

I = (2/5) * M * R^2

= (2/5) * (2 × 10^30 kg) * (11.1 × 10^3 m)^2

Now, we need to calculate the angular velocity (ω). The angular velocity is given by:

ω = 2π / T

where:

T is the period of rotation

Given:

Period of rotation, T = 0.017 seconds

We calculate the angular velocity:

ω = 2π / T

= 2π / 0.017 s

Finally, we substitute the values of I and ω into the formula for rotational kinetic energy:

Rotational Kinetic Energy = (1/2) * I * ω^2

learn more about kinetic energy here

https://brainly.com/question/15764612

#SPJ11

The length of the girl's shadow is approximately 9.18 ft. The length of the shadow of a 5.3 ft-tall girl standing on level ground with the sun 30 degrees above the horizon, we can use the shadow length formula:

L = H / tan(a)

where L is the length of the shadow, H is the height of the object (in this case, the girl), and a is the angle to the source of light (in this case, the sun).

we can see that the formula for calculating the length of a shadow is given in. We can also see that the height of the girl is 5.3 ft and the angle to the source of light (the sun) is 30 degrees, as given in.

Plugging these values into the formula, we get:

L = 5.3 / tan(30)

L = 5.3 / 0.5774

L = 9.18 ft (rounded to two decimal places)

Therefore, the length of the girl's shadow is approximately 9.18 ft.

To know more about shadow:

https://brainly.com/question/31162142

#SPJ12

Unit vectors along N, S, E, W are i , -i , j, -j .

To find unit vector along :

V1 = 2 m/s 30° N of E

V2 = 3 m/s 40° N of W

a )

\(v_1=2(cos\ 30^oi+ sin\ 30^oj)\\\\v_1=2(\dfrac{\sqrt{3}}{2}i+\dfrac{1}{2}j)\\\\v_1=\sqrt{3}i+j\)

b )

\(v_2=3(cos\ 40^oi+ sin\ 40^oj)\\\\v_2=3(0.77i+0.64j)\\\\v_2=2.31i+1.92j\)

Hence, this is the required solution.

The car's acceleration due to the air resistance created by sticking the hand out of the car window is 2.8 m/s².

When an object is traveling through a fluid medium, such as air, it will experience drag or air resistance. This resistance opposes the motion of the object and results in a reduction of its speed. The magnitude of the force of air resistance depends on several factors, such as the speed of the object, the cross-sectional area of the object, and the density of the fluid medium.

Therefore, when you stick your hand out of a car window that was moving at 55k(m)/(h)r, the hand experiences air resistance and causes the car to slow down to 53k(m)/(h)r. The time for which the hand was in the passing air was 0.2 seconds.

The change in the car's velocity is Δv = 55 - 53 = 2 km/h = 0.56 m/sThe time for which the hand was in the passing air was t = 0.2 seconds Therefore, the car's acceleration can be calculated as follows: acceleration = Δv/t = 0.56/0.2 = 2.8 m/s²

Know more about acceleration here:

https://brainly.com/question/2303856

#SPJ11

the sun can be directly overhead at local noon in states located between the Tropic of Cancer and the Tropic of Capricorn. as the angle of the sun's rays will always be at an angle.

The equator is an imaginary line that circles the Earth at 0 degrees latitude. States that are near the equator, such as Ecuador, Colombia, Brazil, Kenya, and Indonesia, experience the sun being directly overhead at local noon twice a year, during the equinoxes.

This is because the Earth's axis is tilted at an angle of about 23.5 degrees, which causes the sun's angle to change throughout the year as the Earth orbits around it. States that are farther away from the equator will not experience the sun being directly overhead at local noon, as the angle of the sun's rays will always be at an angle.

To know more about angle visit:

https://brainly.com/question/21090110

#SPJ11

Vector V perpendicular to the plane through the given points A=(-3,4,−4) , B=(-5,0,−4) , and C=(-5,0,−3) is given by V=⟨−8,−4,0⟩.

The given points A(−3,4,−4) , B(−5,0,−4) , and C(−5,0,−3) are the three points in a plane.

Let's name the plane as 'P'.

To find the vector V that is perpendicular to the plane P, we need to find the cross product of the vectors in the plane P.

Let the vector BA = A - B,

BC = C - B be the vectors in the plane P. Then, the vector V perpendicular to the plane P is given by the cross product of BA and BC.

Vector BA = A - B

= (-3 - (-5), 4 - 0, -4 - (-4))

= (2,4,0)

Vector BC = C - B= (-5 - (-5), 0 - 0, -3 - (-4))

= (0,0,1)

Therefore, the vector V that is perpendicular to the plane through the given points A, B, and C is obtained by taking the cross product of BA and BC as follows:

V = BA × BC

= |i j k| (2,4,0) (0,0,1)| 4 0 -8 |

= -8i -4j -0k

To know more about plane visit:

https://brainly.com/question/1160148

#SPJ11

Explanation:

physics allow us to understand the electromagnetic radiation we used to transmit data with fibre optics and satellites and to build computers that interpret those signals and transmit data on the internet

Explanation:

When water vapor in the air comes into contact with something cool, like the ceiling of a tent, its molecules slow down and get closer together. When that happens, the gaseous water vapor turns back into liquid water droplets. That's condensation!

Speed is a scalar quantity because it is only represented by magnitude not a direction.

The plane was flying at 39.6 m/s when the bottle was released .

\(h = ut + 1/2at^2\)

distance fallen h= 500m

Initial velocity u=0

a=98 m/s2

\(h = 1/2at^2\)

\(t^2 = 2h/a\)

\(t^2 = 1000/9.8 = 10.1s\)

\(d_h = 400, t = 10.1s\)

\(v = d_h/t\\v = 400/10.1\)

v = 39.6 m/s

Altitude or Height  (also known as depth) is a measurement of the distance between a reference point and a point or object, usually in a vertical or "upward" direction. The exact definition and reference value varies depending on the context (eg, aeronautics, geometry, geodesy, sports, or barometric pressure). Although the term height is often used to refer to the height of a place above sea level, in geography the term height is often preferred for this use.

The vertical measurement of distance in the "down" direction is usually called depth.

To learn more about altitude, visit;

https://brainly.com/question/4390102

#SPJ13

Vector quantities include displacement, force, torque, momentum, acceleration, and velocity. A physical quantity that has both directions and magnitude is referred to as a vector quantity.

Summary. Any quantity with magnitude and direction, such displacement or velocity, is referred to as a vector quantity. Mathematical entities referred to as vectors are used to express vector quantities. Geometrically, a vector is represented by an arrow with an arrowhead at the end.

displacement, such as 50 kilometers east. velocity, for instance, 11 m/s and above. acceleration, for instance 9.8 m/s2 of downward motion momentum, such as 250 kg m/s (kg meters per second) in the south west.

To know more about Vector quantities visit:-

https://brainly.com/question/774036

#SPJ1

Answer:

See below

Explanation:

from 10 m/s to 20 m/s  

         average is   (10 + 20 )/2 = 15 m/s average

15 m/s  * 60 sec = 900 meters

Here is a longer way to find out how fa it travelled

  a = acceleration = change in velocity/ change in time

                             =   10 m/s / 60 sec = 1/6 m / s^2

xf = xo + vo t + 1/2 a t^2

   = 0   + 10 (60) + 1/2 ( 1/6)(60)^2

   =            600    + 1/12 (3600) = 900 meters

Quasars may result from the very energetic merging of gas spiraling at high velocity in condensing galaxies.

A quasar forms can be regarded as one that the material that falls into the accretion disc  which is seen in  supermassive black hole at the centre of a galaxy.

It should be noted that it is an extremely luminous active galactic nucleus  which is been powered by a supermassive black hole,  having a large  mass, hence Quasars may result from the very energetic merging of gas spiraling at high velocity in condensing galaxies.

Learn more about Quasars at:

https://brainly.com/question/6092839

#SPJ1

Answer:

Explanation:

Waves and Diffraction: Lab ReportTitle:Lab: Waves and DiffractionPurpose:When a wave encounters a small obstacle or the edge of a barrier, the phenomenon known asdiffraction will occur. The wave theory of light can help explain diffraction, although observingdiffraction of light directly is difficult due to the very short wavelengths of light. In this lab, you willuse a “ripple tank” simulation, which provides a convenient way to study wave diffraction on alarger scale, since the principles of wave diffraction apply to physical waves (such as soundwaves and waves in liquid) as well as electromagnetic waveswaves

The car will travel 6.12 km one litre of petrol when driven at this speed

Given the energy provided by one liter of gasoline e = 34 * 10⁶ Joules

efficiency of the car = 40%

The speed of the car is 9.0 ms⁻¹

Power of the car = P = 20 kW

The useful energy produced by the car is equal to

= P * e

Therefore the useful energy is

= 34 * 10⁶ * 40/100

= 1.36 * 10⁷ Joules

Now, we can say that car consumes 20 ± 10³ J/s to travel at the speed of 9 m/s

The time for which the car will keep moving at this speed using the energy provided by 1 liter of fuel is

\(t=\frac{1.36*10^{7} }{20*10^{3} }\) = 680 sec

The distance travelled by car during this time is

d = 9 * 680

d= 6.12 km

Read more about Work power energy from:

https://brainly.com/question/20725575?referrer=searchResults

#SPJ4

Answer:

80 J

Explanation:

PE = mgh

PE = (4 kg)(9.8 m/s^2)(2 m)

PE = 78.4 J and with sig figs, it would be 80 J

Answer:

we need more info

Explanation:

Answer:

law of action and riactiond

Answer:

V=1.5V

Explanation:

p=I×V

4.5=3×V

\(v = \frac{4.5}{3} \)

\(v = \frac{3}{2} \)

v=1.5

The strength of the magnetic field at the center of the solenoid is 0.006 T

The strength of the magnetic field at the center of a solenoid is given by:

B = μ₀ * n * I

where B is the magnetic field strength, μ₀ is the permeability of free space, n is the number of turns per unit length of the solenoid, and I is the current flowing through the solenoid.

In this case, the length of the solenoid is not given, but we can assume that it is much greater than the diameter of the solenoid, so we can treat it as a long solenoid. The number of turns per unit length is given as 200 loops divided by the length of 6.5 cm, or:

n = 200 / 0.065 m = 3076.92 turns/m

The current flowing through the solenoid is 5 A.

The permeability of free space, μ₀, is a constant with a value of 4π x 10^-7 T m/A.

Therefore, the magnetic field strength at the center of the solenoid is:

B = μ₀ * n * I

= 4π x 10^-7 T m/A * 3076.92 turns/m * 5 A

= 0.006 T

So the strength of the magnetic field at the center of the solenoid is 0.006 T. The north pole of the solenoid is the end from which the magnetic field emerges, and the south pole is the end where it enters.

Learn more about magnetic field below.

https://brainly.com/question/14411049

#SPJ1

Answer:

Acceleration

Explanation:

The electrical potential between the anode and the cathode alters when a charged particle enters the tube. This shift in voltage in the electrical circuit results from the potential change in the tube and counts as a change.

When radiation strikes the gas inside the tube, it dislodges an electron from the gas particle and produces an ion pair. The tube's centre has a filament that draws electrons.

The ionisation process is used by a Geiger counter to measure and identify radiation. The chamber of the gadget contains a stable gas. This gas ionises when subjected to radioactive particles.

To know more about electrical potential visit:-

https://brainly.com/question/12645463

#SPJ1