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Physics High School

A car drives with a constant speed of 22 miles per hour. How far can it travel in 1 hour?

2 months ago

Solution 1

Guest #5491609

2 months ago

Answer:
22 miles

Explanation:

📚 Related Questions

Question

How far will a squirrel move is it has an average speed of 0.5 m/s and moves for 45 seconds?

Solution 1

Answer:

22.5meters

Explanation:

Step one:

Given data

Average speed = 0.5 m/s

time = 45 seconds

Required

The distance covered

Step two:

From Speed= distance/time

Distance= speed*time

Distance= 0.5*45

Distance= 22.5meters

Question

Which is a correct description of Hooke's law? -The force applied to a spring equals the product of the spring constant and the displacement. -The force applied to a spring equals the spring constant divided by the displacement. -The spring constant of a spring equals the product of the force applied and the displacement. -the spring constant of a spring equals the displacement divided by the force applied.

Solution 1

Answer:

The force applied to a spring equals the product of the spring constant and the displacement.

Explanation:

From Hooke's law, the force required to extend or compress a spring by a distance is proportional to the distance. This means extension is proportional to force.

Mathematically it is stated as;

F= -k*x where k is the spring constant and x is the displacement of the spring after adjustment.

Hooke's law is an example of elasticity property of a material which is the ability of the object to return to a normal shape after experiencing a distortion also called "restoring force"

Solution 2

Answer:

Option A

Explanation:

Question

Earth travels fastest in January and slowest in July. What is the most likely explanation for this? A. Earth is nearest the Sun in July and farthest away in January. B. Earth is nearest the Sun in January and farthest away in July. C. Earth is nearest the Sun in April and farthest away in October. D. Earth is nearest the Sun in October and farthest away in April.

Solution 1

Answer:

Earth is nearest the Sun in July and farthest away in July.

Explanation:

Solution 2

Answer:

Correct Answer: B.

Explanation:

Earth is nearest the Sun in January and farthest away in July. Explanation: According to Kepler's Second Law, a planet travels fastest when it is nearest its sun. This means that Earth is actually closest to the Sun in January, when it is winter in the northern hemisphere!

Question

Why would it be incorrect to say that the bulb supplies 60 J of light energy energy each second

Solution 1

Answer:

Explanation:

A 60W bulb , consumes electrical energy of 60 J per second but it does not give out all the energy in the form of light . Most of the energy consumed by it is wasted in the form of heat . Only a fraction of energy is converted into light energy .

Hence, it is wrong to say that bulb supplies 60 J of light energy each second .

Question

A charging bull elephant with a mass of 5230 kg comes directly toward you with a speed of 4.45 m/s. You toss a 0.150-kg rubber ball at the elephant with a speed of 7.91 m/s. (a) When the ball bounces back toward you, what is its speed? (b) How do you account for the fact that the ball’s kinetic energy has increased

Solution 1

Let us consider the masses of elephant and rubber ball was denoted as-

$m_{1} \ and\ m_{2} \ respectively$

Let the initial velocity of the elephant and rubber ball is denoted as -

$u_{1} \ and\ u_{2}\ respectively$

Let the final velocities of the elephant and rubber ball is denoted as-

$v_{1} \ and\ v_{2} \ respectively$

As per the question-

$m_{1} = 5230 kg$ $u_{1} =4.45 m/s$

$m_{2} =0.150 kg$ $u_{2} =7.91 m/s$

We are asked to calculate the velocities of rubber ball and charged elephant.

From law of conservation of momentum and kinetic energy, we know that-

First we have to calculate the velocity of elephant.

$v_{1} =\frac{m_{1}- m_{2}} {m_{1}+ m_{2}}*u_{1} +\frac{2m_{2}} {m_{1}+ m_{2}}*u_{2}$

$v_{1} =\frac{5230-0.150}{5230+0.150}*[4.45] +\frac{2*0.150}{5230+0.150} *[-7.91]\\$ [ Here the velocity of rubber ball is taken as negative as it is opposite to the direction of motion of elephant.]

$v_{1} =\frac{5229.85}{5230.15} *[4.45]-\frac{0.3}{5230.15} *[7.91]$

$v_{1} =4.449291034m/s$

Now we have to calculate velocity of rubber ball.

$v_{2} =\frac{m_{2}- m_{1}} {m_{1}+ m_{2}}*u_{2} +\frac{2m_{1}} {m_{1}+ m_{2}} * u_{1}$

$v_{2} =\frac{0.150-5230}{5230+0.150} *[-7.91]+\frac{2*5230}{5230+.150} *[4.45]$

$v_{2} =\frac{-5229.85}{5230.15} *[-7.91]+\frac{10460}{5230.15} *[4.45]$

$v_{2} =16.80929103 m/s$

Here we see that velocity of rubber ball is increased.

The kinetic energy of the rubber ball is given as -

$kinetic energy [K.E]=\frac{1}{2} mv^2$

As the velocity of the ball is increased,hence, its kinetic energy is increased.

Solution 2

You have to add the speed of that ball plus the speed is running so 4.45 + 7.91= 12.36m/s

Question

How much water is displaced by a solid object with a volume of 9 cm3 that is completely submerged in the water?

Solution 1

Given :

An object with a volume of 9 cm³ is completely submerged in the water.

To Find :

How much water is displaced by the object.

Solution :

According to Archimedes' principle, the amount of volume displaced of fluid when an object is fully and partially submerged into that is equal to the volume of the object below the surface of liquid.

Now, it is given that object is fully submerged into water.

Therefore, volume of water displaced by the object is 9 cm³.

Question

Describe how elements are different from atoms

Solution 1

An atom is the smallest component of an element, containing neutrons, protons and electrons, and makes up everything around us.
An element is a substance in which all of the atoms have the same atomic (proton) number. It is also defined as a substance which cannot be broken down by chemical means.

Solution 2

Answer:

An atom is the part of an element. A particular element is composed of only one type of atom. Atoms are further composed of subatomic particles called electrons, protons and neutrons. Elements can combine with each other to form molecules via chemical reaction.

Question

Classifies wildlife around a geothermal plant conducts environmental impact studies of geothermal plants analyzes the distribution and movement of water at a geothermal plant site Which goes where? bachelor's degree doctorate degree master's degree

Solution 1

I think it’s the master’s degree

Solution 2

Answer: what happed to you ?

Explanation:

Question

Scientific law provides descriptions. True False

Solution 1

Answer:

True

Explanation:

I am right

Question

Which of the following statements about flood mitigation is true? It is cheaper to fund flood mitigation projects than to pay for repairs after flooding has occurred. Minimal research has been done comparing the costs of funding flood mitigation projects to the cost of repairs after flooding has occurred. It is cheaper to pay for repairs after flooding has occurred than to fund flood mitigation projects. It costs roughly the same to fund flood mitigation projects as paying for repairs after flooding has occurred.

Solution 1

From the information in the question, the statement that is true about flood mitigation efforts is that; "It is cheaper to fund flood mitigation projects than to pay for repairs after flooding has occurred."

Flood mitigation

The term "flood mitigation refers to a deliberate attempt to stop flood incidences in an areas especially when it is an area that is prone to flood incidents.

The statement that is true about flood mitigation efforts is that; "It is cheaper to fund flood mitigation projects than to pay for repairs after flooding has occurred."

Learn more about flood mitigation: brainly.com/question/26054041

Solution 2

Answer:a

Explanation:

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