PHYSICS HIGH SCHOOL

88.0 km to m (in physics prefixes )

Answers

Answer 1
Answer:

We know that,

kilometre = 1000 metre

1000 can be written as 10³ which is kilo.

Given,

88.0km = 88.0×1000

= 88.0×10³m

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If (on earth) an object falls 18m and loses 36J of GPE. What is the objects mass?

Answers

The gravitational potential energy of the object falling from 18 m height is 36 J. Thus, its mass is 0.2 Kg.

What is gravitational potential energy?

Gravitational potential energy of an  object is the energy generated by virtue of its position in a gravitational field. The magnitude of gravitational potential energy is directly proportional to the mass of the object , height from the surface and the acceleration due to gravity.

GPE = mgh

The height of the object falling = 18 m

Gravitational potential energy = 36 J

Acceleration due to gravity in earth = 9.8 m/s².

Mass of the object = GPE/ (gh)

                               = 36 J/ (18 m×9.8 m/s² )

                               = 0.20 Kg.

Therefore, the mass of the object is 0.20 Kg.

To find more on gravitational potential energy, refer here:

brainly.com/question/19768887

#SPJ2
PE=mgh
Where 'g' is the gravitational constant (9.81 m/s^2)
If you're solving for m, you can change the equation to be (PE/gh)=m.
m=(36J/18m*9.81m/s^2)
m=.2kg

The greater the concentration of sulfur and nitrogen oxides, the higher the pH of precipitation.True
False

Answers

Answer: False

Nitrogen and sulfur dioxide are acidic oxides in nature. The burning of fossil fuels and other sources are responsible for addition of these oxides in the atmosphere of earth. These oxides mixed with water vapor causes acid rain. Being acidic in nature they will have low pH value. Therefore, greater the concentration of sulfur and nitrogen oxides, will lower the pH value of precipitation.

Answer:

False

Explanation:

a wagon weighing 1800 newtons is pulled by a horse at a speed of 0.40 m/sec. what is the power of this horse?

Answers

Power is equal to (Newtons x meters)/time, also known as the following equation...

P = Fd/t

Your force is 1800Newtons and your velocity is 0.4m/s
Velocity is equal to distance/time, also known as the following equation...

v = d/t

So your equation is basically P = Fv

P = 1800N x 0.4m/s

P = 720 Watts

The diagram shows the path of a pendulum bob that has been released.Which describes the kinetic energy of the pendulum bob?



A.
It increases as it travels from its maximum amplitude to its resting point.

B.
It decreases as it travels from its maximum amplitude to its resting point.

C.
It remains the same throughout the period.

D.
It decreases at the arm, but increases at the pivot point

Answers

The right answer for the question that is being asked and shown above is that: "B. It decreases as it travels from its maximum amplitude to its resting point." the statement that describes the kinetic energy of the pendulum bob is that It decreases as it travels from its maximum amplitude to its resting point.

How many gallons are in a cubic gallon?

Answers

There's no such thing as a "cubic gallon". A 'gallon' is already a unit of volume,
only without the word 'cubic' in it.

If you like to play with different units of measure, here are a few conversions:

1 gallon = 231 cubic inches
1 cubic foot = 1,728 cubic inches = about 7.4805 gallons

1 cubic meter = 1,000 liters = 1 million cubic centimeters = about 264.17 gallons

If you lift a 16 kg child from the floor to her bed, which is 1 meter high, how much have you increased her potential energy.

Answers

GPE=mgh
GPE=16•9.8•1
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