How many joules of energy does a 100-watt light bulb use per hour? How fast would a 70-kg person have to run to have that amount of kinetic energy?

Answer:

3000 seconds

Explanation:

You got it !!

Hope it helpful to you

Answer:

f(y)=2

Explanation:

5x/5-20/5

x=4

f(y+2)=4

    -2   -2

f(y)=2

The speed of the puck is 3.67 m/s.

To find the speed of the puck, we can use the concept of centripetal force. The tension in the string provides the necessary centripetal force to keep the puck moving in a circle. At the same time, the tension in the string also supports the weight of the suspended mass.

Using Newton's second law, we can write two equations of motion: one for the puck and one for the suspended mass. For the puck, the net force acting on it is the tension in the string, which is equal to the centripetal force required to keep it moving in a circle. Thus, we can write:

= m1 * v^2 / R

where T is the tension in the string, v is the speed of the puck, and R is the radius of the circle.

For the suspended mass, the net force acting on it is its weight minus the tension in the string, which must be zero since the mass is in equilibrium. Thus, we can write:

T = m2 * g

where g is the acceleration due to gravity.

Combining these two equations, we can solve for the speed of the puck:

v = sqrt(T * R / m1) = sqrt(m2 * g * R / m1)

Substituting the given values, we get:

v = sqrt(1.0 kg * 9.81 m/s^2 * 0.9 m / 0.21 kg) = 3.67 m/s

Therefore, the speed of the puck is 3.67 m/s.

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The average force is equal to the area under the curve of force versus time divided by the time of contact between the hammer and the nail.

The equation can be used to determine the average force the nail applies to the hammer.

\(F = \frac{mv}{t}\), where m is the hammer's mass, v is its speed, and t is the time at which it made impact with the nail. The average force in this situation is given by:

\(F = \frac{(2.5 kg)(6 m/s - 2.0 m/s)}{(0.002 s)}\\ F= 4500 N.\)

To solve this problem using force vs. time, you would need to plot a graph of force versus time, with the time of contact between the hammer and the nail representing the x-axis and the force exerted on the hammer by the nail representing the y-axis. The force exerted on the hammer increases from 0 to 4500 N as the hammer moves from rest to its maximum velocity. The average force is equal to the area under the curve of force versus time divided by the time of contact between the hammer and the nail.

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The position of a particle is given by the vector < 3.3t² , 3.2 , - 2.4t >. The magnitude of the acceleration at t=0 is 3.3 m/sec².

The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is acceleration.

Given in the question The position of a particle is given by the vector

< 3.3t² , 3.2 , - 2.4t >. The magnitude of the acceleration at t=0.

Differentiating position vector for two times we get acceleration vector,

so acceleration is 3.3 m/sec²  

.The position of a particle is given by the vector < 3.3t² , 3.2 , - 2.4t >. The magnitude of the acceleration at t=0 is 3.3 m/sec²

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Answer:

3.08*10^-6 m

Explanation:

Given that

Total shearing force, F = 640 N

Shear modulus, S = 1*10^9 N/m²

Height of the cylinder, L = 0.7 cm

Diameter of the cylinder, d = 4.3 cm

The solution is attached below.

We have our shear deformation to be 3.08*10^-6 m

In the given figure a 0.250 kg block of cheese lies on the floor of a 900 kg elevator cab that is being pulled upward by a cable through a distance d₁=2.40 m and then through a distance d₂=10.5 m.

Generally, To find the work done on the cab by the force from the cable in part (a), we can use the work-energy principle, which states that the work done on an object is equal to the change in its kinetic energy.

Since the cab is not accelerating, the change in its kinetic energy is zero, and so the work done on the cab is also zero.

In part (b), The work done on the cab by the cable is given as 92.61 kJ. The change in kinetic energy of the cab is equal to its final kinetic energy minus its initial kinetic energy. Since the initial kinetic energy of the cab is zero (it starts at rest), the change in kinetic energy of the cab is equal to its final kinetic energy.

The final kinetic energy of the cab can be expressed as:

KE = (1/2) * m * v^2

Where KE is the kinetic energy, m is the mass of the object, and v is the velocity of the object.

Since we are given that the mass of the cab is 900 kg and we are trying to find the velocity of the cab, we can rearrange the equation to solve for v:

v = √(2 * KE / m)

Substituting the values for KE and m, we get:

v = √(2 * 92.61 kJ / 900 kg)

v= 0.45365m/s

Now that we know the velocity of the cab, we can use the work-energy principle to find the force exerted on the cab by the cable.

The work done on the cab by the cable is given as 92.61 kJ, and the distance the cab moves is given as

d1 + d2 = 2.4 m + 10.5 m

= 12.9 m.

The force exerted on the cab by the cable is given by the equation:

F = W / d

Substituting the values for W and d, we get:

F = 92.61 kJ / 12.9 m

F= 7.179 kN

Therefore, the magnitude of Fₙ is 7.21 kN.

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Complete Question not found

Figure not found

Step 1

Free body diagram

Step 2

Newton's second law says that when a constant force acts on a massive body, it causes it to accelerate, a force applied to an object at rest causes it to accelerate in the direction of the force.it is given by the formula

so

a)let

b) now ,replace and solve for a

from the free body diagram and the data we know that the object accelerates horizontally ,so the sum of the applied force make the object moves rigthwards

therefore,

the acceleration of the objects is 2.02 meters per square second

I hope this helps you

ANSWER

No, he cannot

EXPLANATION

First, let us draw a sketch of the problem:

For him to be able to unscrew the nut, the moment of the largest force he can apply must be greater than the minimum moment required to unscrew the nut.

To find the moment of the force, we apply the formula:

where F = force applied = 100 N;

d = distance between effort and bolt i.e. the length of the spanner = 25 cm = 0.25 m

Therefore, we have that the moment of the force is:

Since the largest moment is 25Nm, and the minimum moment required to unscrew the nut is 30Nm, he cannot unscrew the nut.

The answer is NO.

Answer:

White or lighter colored, shirt REFLECTS most of the visible wavelengths or all colors of light while a black or dark shirt ABSORBS more wavelengths.

So, Absorbed radiation is converted into heat, making the darker or black shirt warmer to wear.

-TheUnknownScientist 72

Answer:

Yeah it's ok I think. Also, I can't see the answer you gave so maybe updating the question would be nice.

The next most successful graft type and what is the source of killer t cells and macrophages energy. if Assuming that autografts and isografts are not possible.

CCR2− macrophages are largely derived from embryonic progenitors, including contributions from yolk sac macrophages, and are primarily autonomous from blood monocytes. energy, in physics, is the capacity to do work.  In contrast, resident cardiac CCR2+ macrophages are derived entirely from definitive HSCs and are replaced slowly by blood monocytes.

energy is the ability to do work. T cells and macrophages appear in the urine of patients with glomerulonephritis (GN), accompanied by active cellular infiltration such as cellular crescent formation and diffuse interstitial cell infiltration, but not in the urine of patients with GN without the active inflammatory lesions.

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Answer: They have different rigidities.

Explanation:

The speed of sound is different through these materials because, they have different rigidities.

The property of a material that prevents its shape from changing as a result of an external force is known as rigidity.

Here,

Given that, the speed of sound through diamond is about 12,000 m/s and the speed of sound through wood is about 3,300 m/s.

This is due to the variation in rigidity of the materials through which the sound is travelling.

The stiffness of the medium (or compressibility in the case of gases) and its density work together to define the speed of sound in that medium. The speed of sound increases with the rigidity of the medium. The speed of sound decreases with increasing medium density.

Hence,

The speed of sound is different through these materials because, they have different rigidities.

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Answer:

They create enormous amounts of sound energy, much like explosion. When an aircraft passes through air, it creates a series of pressure waves just like the waves created by the boat. As the speed of aircraft increases these waves are forced to compress.

Answer:

What happens when a plane passes the speed of sound?

Answer - You hear a loud BOOM then you cant hear it

How does it sound?

Answer - there is no sound

Is the sound super high since the wavelength is super low or maybe even non-existent?

Answer - When its about to break the sound barrier it makes a high pitched sound

How does it look and why does it look that way?

Answer - Its air you cant see it ;-;

How will it affect people on ground?

you will hear the sound and it might hurt but nothing else

Explanation:

A free-body diagram of the block on the frictional part of the surface would show the force of friction acting in the opposite direction to the velocity of the block, and the force of gravity acting downward.

Using conservation of energy, the speed of the block at the base of the ramp can be found by setting the initial kinetic energy of the block (1/245^2) equal to the final kinetic energy of the block (1/2mv^2) and solving for v. v = sqrt((1/245^2)/(1/2*m)) where m is the mass of the block.

Using conservation of energy, the maximum vertical height H of the block on the ramp can be found by setting the initial potential energy of the block (mgH) equal to the final kinetic energy of the block (1/2mv^2) and solving for H. H = (1/2mv^2)/(m*g)

a) The total impulse given to the mass on the spring (mass A) during the brief collision is the product of the force exerted on the mass by the block and the time duration of the collision.

b) The speed of the mass on the spring (mass A) immediately after the collision can be determined using the conservation of momentum.

c) The velocity of the block immediately after the collision can also be determined using the conservation of momentum.

d) The spring constant can be determined by using the equation k = (2*F)/x, where F is the force exerted on the spring and x is the compression of the spring.

To find the horizontal range of the block from the end of the ramp, we can use the equations for horizontal and vertical motion of a projectile, with the angle of launch being 30 degrees, the initial speed being 6 m/s, and the final vertical position being 1m above the end of the ramp.

Answer:

Speed and direction.....

Answer:

In mechanics, the normal force F_n\ is the component of a contact force that is perpendicular to the surface that an object contacts, as in Figure 1

Explanation:

Answer:

Explanation:

This depends on the height.

Using the formula mgh + 1/2mv^2 = total mechanical energy, we can determine the amount of kinetic and potential energy. I'm assuming your talking about if the marble goes all the down, then all of the energy is converted.

Answer:

inertia

Explanation:

The periodic time of the campus shuttle is = 1 sec

The periodic time is also known as  revolution per second is the time it takes object in motion ( revolving ) to pass through a point twice ( usually the starting position ) of the object and it calculated as :

For a simple pendulum = 2π√L/g

But a campus shuttle bus in motion

since it takes

1 revolution = 1 sec therefore the time period is = 1 sec

Hence we can conclude that the periodic time of the campus shuttle = 1 second.

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Answer:

The cost of running the electric water heater for one year is 55.2391 $

Explanation:

The simple rule of 3 helps to quickly solve proportionality problems when you have three known values ​​and one unknown. If two quantities are directly proportional (that is, when multiplying or dividing one of them by a number, the other is multiplied or divided respectively by the same number) the rule of three can be applied as follows:

a ⇒ b

c ⇒ x

So: \(x=\frac{c*b}{a}\)

where a, b and c are the known values ​​and x is the value you want to find out.

In this case, you can first apply the following rule of three: if 2.5 kW are consumed in 1.9 hours, in 1 hour how many kW are consumed?

\(kWh=\frac{1 h*2.5 kW}{1.9 h}\)

kWh=1.316

So an electric water heater consumes 1.316 kWh in one day. You apply another simple rule of three: if the heater in 1 day consumes 1.316 kWh, in 365 days (1 year) how many kWh are consumed?

\(kWh=\frac{365 days*1.316 kWh}{1 day}\)

kWh= 480.34

So an electric water heater consumes 480.34 kWh in a year.

If 1 kWh costs 11.5 cents, 480.34 kWh how many cents does it cost?

\(cost=\frac{480.34 kWh*11.5 cents}{1 kWh}\)

cost= 5,523.91 cents

Finally, if 100 cents is equal to 1 dollar, 5,523.91 cents, how many dollars are equal?

\(cost=\frac{5,5523.91 cents*1 dollar}{100 cents}\)

cost= 55.2391 $

The cost of running the electric water heater for one year is 55.2391 $

Answer:

Helium, Water, Glass, Diamond

Explanation:

light travels slowest though a diamond

Answer:

Explanation:

1. The waves in which the partciles of medium vibrates in the same direction of propagation of wave, are called longitudinal waves.

The waves in which the partciles of medium vibrates in the perpendicular direction of propagation of wave, are called transverse waves.

2. Period, T = 0.03 s

The frequency is given by the reciprocal of the period.

\(f=\frac{1}{T}\\\\f =\frac{1}{0.03}\\\\f = 33.3 Hz\)

1. Transverse waves carry molecules at right angles to the direction in which the wave travels. Within a cycle, molecules move from their normal position to the highest position, back through the normal position to the lowest point, and then back to the normal position. The molecules retain their horizontal positions while vibrating vertically. Amplitude is measured at right angles to the direction of the travel of the wave. Wavelength can be represented as the distance between any two molecules in phase with each other, such as the two nearest molecules at the crests of the wave.

Longitudinal waves carry molecules parallel to the direction in which the wave travels. Within a cycle, a molecule travels in the same direction as the wave (from normal position to its most distant point on one side of its normal position), changes direction, moves back through its normal position to the opposite side of its normal position at a point that corresponds, and then returns to its normal position. The molecules don’t all move at the same time; some remain stationary as others go through a vibrating motion. Compressions and rarefactions occur here. Amplitude is measured parallel to the direction of the wave. Wavelength may be represented as the distance between the two nearest molecules that didn’t vibrate, the two nearest molecules at maximum compression, or the two nearest molecules at maximum rarefaction.

2. f = 1⁄T  

f = 1⁄0.03

f = 33. 3 Hz

3. The first wave has a frequency of 33.3 Hz:

f1 = 1⁄T1

f1 = 1⁄0.03

f1 = 33. 3 Hz

The second wave has a frequency of 4 Hz. f2 = 1⁄T2

f2 = 1⁄1⁄4

f2 = 1 ÷ 1⁄4

f2 = 1 × 4⁄1

f2 = 1⁄1 × 4⁄1

f2 = 4 Hz

Therefore, the first wave has a higher frequency.

4. v = I⁄T

v= 4.5⁄0.007

v = 642.9 m/s

5. Wavelength

Crest

Trough

Amplitude

- The resistance of the first resistor (R₁) is 12 Ω.

- The electromotive force (EMF) of the battery is 18 V.

- The internal resistance of the battery is 12 Ω.

To solve the given problem, we can apply Kirchhoff's laws and Ohm's law to determine the resistance of the first resistor (R₁) and the electromotive force (EMF) and internal resistance of the battery.

Let's start by calculating the resistance of the first resistor (R₁):

1. Apply Ohm's law to find the voltage drop across the external circuit:

  V = I * R

  V = 1 A * 6 Ω

  V = 6 V

2. The voltage drop across the external circuit is equal to the EMF minus the voltage drop across the internal resistance of the battery:

  V = E - Ir

  6 V = E - (1 A * r)   (where r is the internal resistance of the battery)

3. We also know that the EMF of the battery is the sum of the voltage drops across each cell in the battery:

  E = 6 cells * 3 V/cell

  E = 18 V

4. Substitute the value of E in the equation from step 2:

  6 V = 18 V - r

  r = 12 Ω

Therefore, the resistance of the first resistor (R₁) is 12 Ω.

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Answer:

bruh

Explanation:

this is to help people not play games lolllll

Answer:

B) meteoroids.  The key word here is "generally."  Not when it enters the atmosphere or hits the surface of the Earth.  

Explanation: