Breaking is a result of friction between the brake linings and your foot.

A. True
B. False

The image is seen at a distance of 0.500 meters behind the mirror and not at 0.250 meters or 0.244 meters behind the mirror.


The correct answer is d) 0.500 meters behind the mirror. This is because the image seen in a convex mirror is formed behind the mirror, at a distance equal to the radius of curvature (which in this case is 0.500 meters) from the mirror. Therefore, the image is seen at a distance of 0.500 meters behind the mirror and not at 0.250 meters or 0.244 meters behind the mirror.

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Answer:

259200

Explanation:

use the formula distance= speed x time

change the 2 hours to seconds (7200) and multiply that number by 36 and it'll give you 259200

Answer:

12 kilometers and hour

Explanation:

To determine the magnitude of the acceleration of the motorcycle, we need to know the force of friction acting on the wheels. The force of friction is equal to the coefficient of friction multiplied by the normal force acting on the wheels, which is equal to the weight of the motorcycle and rider. The weight of the motorcycle and rider can be calculated by multiplying the mass by the acceleration due to gravity (9.8 m/s^2). So, the force of friction acting on the wheels of the motorcycle is equal to 0.88 * 196 kg * 9.8 m/s^2 = 1661.28 N.

The acceleration of the motorcycle is equal to the force of friction divided by the mass of the motorcycle and rider. So, the acceleration of the motorcycle is equal to 1661.28 N / 196 kg = 8.45 m/s^2.

Answer:  8.45 m/s^2

Answer:

the answer is c

Explanation:

Answer:

The can would be heavier.

Explanation:

The more rust is on the can, (Or object) the more it weights it down.

Answer:

The answer would be heavier, though it depends upon the type of metal. Rusting is essentially corrosion. Rust is often caused by a piece of metal getting soaked in water and then being exposed to oxygen. The rust will add more weight to the can so it becomes heavier.

Answer:

options

Explanation:

Answer:

The pressure exerted by a women wearing shoes with pointed heels is much greater than what an elephant with one foot can exert on ground. This because of lesser area of contact of pointed heels.

hope helpful ~

Answer:

8 minutes

Explanation:

Light travels at a speed of 299,792

kilometers per second; 186,287 miles

per second. It takes 499.0 second

for light to travel from the Sun to the

Earth, a distance celled 1 Astronomical

Unit.

Total distanceThe distance covered by the Courtney is the total length of the path. It is calculated by adding the lengths of each segment that she has traveled through., the displacement of Courtney is √13 blocks.

To calculate the total distance, we need to sum up the distance of all the segments that Courtney walked.Distance walked to school = 5 blocksDistance walked to the store = 3 blocksDistance walked to have dinner = 8 blocksDistance walked back home = 3+3=6 blocksTotal distance = Distance walked to school + Distance walked to the store + Distance walked to have dinner + Distance walked back homeTotal distance = 5+3+8+6=22 blocksTherefore, the total distance covered by Courtney is 22 blocks.Displacement is the distance between the starting point and the endpoint in a straight line. It is the difference between the final and initial positions of the object. Displacement can be represented as a vector. It is a quantity with both magnitude and direction.The displacement of Courtney can be calculated using the Pythagoras theorem. The displacement can be calculated by finding the distance between her starting and ending points. Here, we need to calculate the total north and west distance traveled and then apply Pythagoras theorem.Displacement to the store = 5 blocks northDisplacement to have dinner = 5 - 3 = 2 blocks northDisplacement back home = 2 blocks north - 3 blocks westDisplacement back home = √(2² + 3²) blocksDisplacement back home = √13 blocksTherefore, the displacement of Courtney is √13 blocks.

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O.A magnetic field is a region where a magnetic force is exerted on certain objects.

O. A magnetic field behaves like a force vector.

O.Magnetic field lines form closed loops that spread out of the north end of a magnet.

Explanation:

1,2, and 4

Answer:

a,b,d

Explanation:

i took the test

Answer:

Explanation:

66.2mi/h to m/s

\(\frac{1609m}{1mi}\)×\(\frac{66.2mi}{1h}\)×\(\frac{1h}{60min}\)×\(\frac{1min}{60s}\)

\(\frac{1609*66.2}{60*60}\)= 29.58772222

Pls make sure of the way of solving to be sure...

The correct answer to question:

Explanation:

When g=a, that means everything on earth fall at the same rate.

As such, all objects free fall at the same rate regardless of their mass. Because the 9.8 N/kg gravitational field at Earth's surface causes a 9.8 m/s/s acceleration of any object placed there, we often call this ratio the acceleration of gravity.

When objects fall to the ground, gravity causes them to accelerate. Acceleration is a change in velocity, and velocity, in turn, is a measure of the speed and direction of motion. Gravity causes an object to fall toward the ground at a faster and faster velocity the longer the object falls.

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Answer:

OK

Explanation:

OK

Answer:

the reflection of the candle in the concave mirror formed upside down real image that is diminished

The total number of significant digits in the given number is five. If the books are measured in packets of 10, the number of significant digits reduces to two.

The given data is: Total number of books in the library = 57,000. We are to determine how many significant digits are there in the result? For this, let us define what are significant digits: Digits that are used to communicate meaning or accuracy of measurements are known as significant digits. In other words, the digits that carry meaning contributing to its measurement uncertainty are called significant digits. It is used to determine the accuracy of the results. In this question, the total number of books in the library is given as 57,000. As there are five non-zero digits in the given number, there are five significant digits in the result. Will the result change if the books are measured in the packet of 10? If the number of books is measured in the packet of 10, then there will be a change in the number of significant digits. When we express 57,000 in the packet of 10, we get: 57,000 = 5.7 × 10^4. Now, there are only two significant digits in the result (5 and 7), and hence the result changes.

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Answer:

288.8 m

Explanation:

v² = u² + 2as

\(s = \frac{v^{2} - u^{2} }{2 a} \\\\\\s = \frac{38^{2} }{2* 2.5}\\\\ \\s = 288.8m\)

Answer:

288.8 m

Explanation:

v² = u² + 2as

v= final velocity= 38m/s

u = initial velocity = 0 m/s

a= acceleration= 2.5 m/s²

s = distance = ?

The tension in the cable B is 231 N

What do you mean by tension?

Tension can be defined as a force along the length of a medium, especially a force carried by a flexible medium, such as a rope or cable. It can be defined as an action-reaction pair of forces acting at each end of the said elements.

From the above figure ,

Ta sin30 = w / sin30

Ta = 750N / sin 30

Ta = 1500 N

In the same way

Tb - Tacos30

(1500N)cos30

231N

Hence, The tension in the cable B is 231 N

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The magnetic field is \(\vec B = \frac{\mu_0 jR^2}{2r}\hat \theta\).

The area in which the force of magnetism works around a magnetic substance or a moving electric charge is known as the magnetic field. a diagram that shows the magnetic field and how a magnetic force is distributed within and outside of a magnetic substance.

a) the magnetic field, B outside the wire

Using ampere law:

\(\int Bdl = \mu_0 I_{net}\)

so:

\(B(2\pi r) = \mu_0 (jA) = \mu_0 j(\pi R^2)\)

\(B = \frac{\mu_0 jR^2}{2r}\\\)

the direction is in\(\hat \theta\)

\(\vec B = \frac{\mu_0 jR^2}{2r}\hat \theta\)

b) the magnetic field, B inside the wire

Using ampere law:

\(\int Bdl = \mu_0 I_{net}\)

so:

\(B(2\pi r) = \mu_0 (jA) = \mu_0 j(\pi r^2)\)

\(B = \frac{\mu_0 jr}{2}\)

the direction is in\(\hat \theta\)

\(\vec B = \frac{\mu_0 jr}{2}\hat \theta\)

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Answer:

a)15m/s

b)7.5m/s

Explanation:

a)use the formula for acceleration

b)calculate distance then calculate speed

From Coulomb's law, the sets of charges of +2 C and -2 C, and +2 C and +2 C are experiencing the strongest forces, both with a magnitude of 36 N.

The strength of the electrostatic force between two charges depends on the magnitudes of the charges and the distance between them, as given by Coulomb's law. The larger the magnitude of the charges and the smaller the distance between them, the stronger the force.

A fundamental characteristic of matter called charge describes how it interacts with magnetic and electric fields. It is commonly measured in coulombs (C), can be positive or negative, and can also be zero.

Protons and electrons are examples of subatomic particles that have electric charge.

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To explain the tangent plane to the surface, `z = 53 − x² − 2y²` at the point `(3, 2, 6)`, let us first determine the partial derivatives of `z` with respect to `x` and `y`.

Partial derivative of `z` with respect to `x`, `∂z/∂x = -2x`Partial derivative of `z` with respect to `y`, `∂z/∂y = -4y`Now, let's find the gradient vector `grad z` at `(3, 2, 6)` and the value of `z` at `(3, 2)`.gradient vector `grad z = (-2x, -4y, 1)`gradient vector `grad z = (-6, -8, 1)` at `(3, 2, 6)`.Value of `z` at `(3, 2)` is given by `z = 53 - 3² - 2(2)² = 39`.

Therefore, the equation of the tangent plane to the surface `

z = 53 − x² − 2y²` at `(3, 2, 6)` is:

`z - 6 = -6(x - 3) - 8(y - 2)`

which can be written as:`6x + 8y + z = 50`Thus, the equation of the tangent plane to the surface `z = 53 − x² − 2y²` at the point `(3, 2, 6)` is `6x + 8y + z = 50`.

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When a bar magnet is oriented perpendicular to a uniform magnetic field, two important phenomena occur: the force and the torque on the magnet.

Force: The magnetic field exerts a force on the magnet due to the interaction between the magnetic field and the magnetic dipole moment of the magnet. In this case, the force will be perpendicular to both the magnetic field and the magnet. The force will tend to align the magnet with the magnetic field. If the magnet is free to move, it will experience a translational force that may cause it to move in the direction of the force.

Torque: The magnetic field also exerts a torque on the magnet, trying to rotate it. The torque is greatest when the magnet is perpendicular to the magnetic field lines. The torque will try to align the magnet with the magnetic field. If the magnet is free to rotate, it will experience a rotational force that may cause it to align itself with the magnetic field.

The exact magnitude and direction of the force and torque will depend on the strength of the magnetic field, the orientation of the magnet, and the magnetic properties of the magnet.

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The total weight of screws and nails that Henry bought to build the skate board ramp is 13/20 pounds.

To find the total weight of screws and nails, we need to add the weight of the screws and the weight of the nails.

Henry bought 1/4 pound of screws and 2/5 pounds of nails, so

Total weight = 1/4 + 2/5 pounds

Total weight = (1 x 5)/(4 x 5) + (2 x 4)/(5 x 4) pounds

Total weight = (5/20) + (8/20) pounds

Now that both fractions have the same denominator, we can add them together,

Total weight = 13/20 pounds

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--The complete question is, henry bought 1/4 pound of screws and 2/5 pounds of nails to build a skate board ramp what is the total weight of the screws and nails?--

The movement of a pool ball, after being struck by a cue, is an example of Newton's second law of motion.

According to Newton's second law of motion, an object's acceleration is directly proportional to the magnitude of the applied net force.

Newton's second law of motion is also known as law of momentum. It says that the rate of change of momentum is equal to the net force acting.

The cue ball will stop moving immediately after colliding with a still pool ball if it hits it directly. The other ball, which will now be moving forward at the same speed as the cue ball did before the collision, will have received all of the kinetic energy that was in the first ball.

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looking at the graph,

1) Displacement includes direction

Displacement from 8s to 16s = 15 - 6 = 9

Displacement fbetween 16s and 24s = 0 - 15 = - 15

Displacemet between 8s and 24s = 9 - 15

Displacemet between 8s and 24s = - 6m

2)

Distance does not include direction

from 8s to 16s,

distance travelled = 15 - 6 = 9 m

From 16s to 24s,

distance travelled = 15 - 0 = 15

Total distance between 8s and 24s = 9 + 15

Total distance between 8s and 24s = 24 m

The type of lens shown in the ray diagram is the convex lens and in this type of lens, the image position depends on the object's position relative to the focus point. Hence, option B is correct.

A lens is a transmissive optical object that converges or disperses light by means of refraction. The concave lens is thinner at the middle and thicker at the edges and the convex lens is thicker at the middle and thinner at the edges. The concave lens diverges the light and hence, it is the diverging lens whereas the convex lens converges the light and it is the converging lens.

The diagram shown in the figure is the convex lens. When an object is placed in front of a convex lens, the image formed is real, inverted, and diminished which is formed with respect to the focal length of the convex lens.

Thus, the ideal solution is option B.

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The buoyant force on the board is equal to the weight of the water displaced by the submerged portion of the board. The weight of the board itself can be found from its volume and density:

Volume of board = length x width x thickness = 3.00 m x 0.200 m x 0.0500 m = 0.03 \(m^3\)

Weight of board = volume x density x gravity = 0.03 m^3 x 300 kg/\(m^3\) x 9.81 \(m/s^2\) = 88.29 N

The buoyant force is equal to the weight of the water displaced:

Buoyant force = weight of water displaced = density of water x volume of water displaced x gravity

The density of water is 1000 kg/\(m^3,\) and the volume of water displaced is equal to the volume of the submerged portion of the board, which can be found from the height of the board above the water level:

Height above water level = 3.00 m - submerged height

Submerged height = density of board x volume of submerged portion / (density of water x width x thickness)

Submerged height = 300 kg/\(m^3\) x V / (1000 kg/\(m^3\) x 0.200 m x 0.0500 m) = 0.09 V

The buoyant force is then:

Buoyant force = 1000 kg/\(m^3\)x 0.09 V x 9.81 \(m/s^2\)= 88.29 N

Since the board is floating partially submerged, the buoyant force is equal to the weight of the submerged portion of the board. The fraction of the board that is above the surface of the water is equal to the ratio of the weight of the submerged portion to the weight of the entire board:

Fraction above water = (weight of board - weight of submerged portion) / weight of board

Fraction above water = (88.29 N - buoyant force) / 88.29 N

Fraction above water = (88.29 N - 88.29 N) / 88.29 N = 0

Therefore, none of the board is above the surface of the water.

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False. A carbon-detonation supernova occurs in a single carbon-oxygen white dwarf star, not in a close binary system. The white dwarf undergoes a thermonuclear explosion due to the ignition of carbon fusion, leading to a supernova.

A carbon-detonation supernova does not start out as a white dwarf in a close binary system. Instead, it originates from a single carbon-oxygen white dwarf star. In a close binary system, where two stars orbit each other closely, a different type of supernova known as a Type Ia supernova occurs. In this case, the white dwarf accretes matter from its companion star until it reaches a critical mass, triggering a runaway nuclear fusion reaction and resulting in a supernova explosion. On the other hand, a carbon-detonation supernova is caused by the ignition of carbon fusion within a single white dwarf, without the involvement of a companion star.

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