PHYSICS MIDDLE SCHOOL

1. You are driving south on the 405. You are in traffic so your speed is 35 miles per hour,(35 mi/hr). Calculate your speed in m/sec. Assume that there 1.609 meters in every mile.

2. The Moon takes 27.25 days to make one revolution around the Earth. Calculate how
many seconds it takes for the Moon to make one revolution around the Earth.

Answers

Answer 1

Answer:

Answer:

1. 15.64 m/s

2. 2,354,400 seconds

Explanation:

1. 1mile is equivalent to 1609metres and 1hour is equivalent to 3600sec.

35mph = (35×1609)/3600

= 56315/3600

= 15.64 m/s

2. Note that 1 day ===> 24hrs

60min ==> 1hr

60sec ===> 1min

Thus 27.25 days = 27.25×24×60×60

= 2,354,400 seconds

Related Questions

A wave has an amplitude of0.0800 m and is moving 7.33 m/s.One oscillator in the wave takes0.115 s to go from the lowest pointin its motion to the highest point.Find the frequency of the wave.(Unit = Hz)
Which stream has the greatest potential energy on the top: stream with steeper slope or stream with gentle slope?
What will cause a backpack sitting on the floor of the school bus to suddenly fly forward
Draw five protons in the nucleus of the atom
What is the most basic level of knowledge that contains the most specific concepts

What is true about current?Check all that apply

A. It is measured in ohms.

B. It is related to voltage and resistance by Ohm's Law.

c. It is the excess accumulation of electric charge.
D. It is measured in amps.
E. It is the flow of electric charges.

Answers

Choices B, D, and E are all true statements.

The answer is D. The current is measured on Amperes or Amps

Two charges q1 and q2 are separated by a distance, d, and exert a force, F, on each other.Which best represents the new force F′ if q1 is tripled?

Answers

If the charge q₁ is tripled then the force between the charged becomes 3 times the original charge.

Explanation:

Given:

Distance between the two charges = r

The force between two charges is given by:

$F_1 = k(q_1q_2)/(r^2)$

If q₁ is tripled, then the force F becomes:

$F_2 = k((3q_1)Xq_2)/(r^2)$

$(F_2)/(F_1) = (3q_1q_2)/(r^2) X (r^2)/(q_1q_2)\n\nF_2 = 3F_1$

Therefore, if the charge q₁ is tripled then the force between the charged becomes 3 times the original charge.

Answer:

F′ = 3 F

Explanation:

A wave with a large amplitude has a lot of a.vibration b.speed c.energy

Answers

A wave with a large amplitude has a lot of a.vibration b.speed c.energy

Answer:

A high amplitude wave carries a large amount of energy; a low amplitude wave carries a small amount of energy. The average amount of energy passing through a unit area per unit of time in a specified direction is called the intensity of the wave.

Enjoy.

You could use an elevator or the stairs to lift a box to tenth floor.which has greater power?

Answers

Stairs don't have any power at all. All the energy used to climb them
has to come from your muscles.

An elevator gets its power from the electric motors that lift it. All YOU
have to do is stand there and look around.

All of this is a big part of the reason why elevators have become so
popular, and why no buildings with more than a few floors were built
before elevators were invented.

Does anyone have a software online that you can attach videos to? (School project)

Answers

Depends onwhat you are doing, powerpoint allows you to add videos to it as well as keynote on mac. Is that what you where after?

7. What mass of water will change its temperature by 3.0°C when 525 J of
heat is added to it?

Answers

The mass of the water is 41.9 g

Explanation:

When an amount of energy Q is supplied to a sample of substance of mass m, the temperature of the substance increases by $\Delta T$ , according to the equation: