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Rina8888 [55]
2 years ago
6

A student rides her bike to school. Her school is 5 miles from home. She travels at an average rate of 15 miles per hour. How mu

ch time does she need?
Physics
1 answer:
Elden [556K]2 years ago
3 0

Answer:

.3 repeating hours

Explanation:

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Which of the following is NOT an example of kinetic energy being converted to potential energy?
Pani-rosa [81]

There are no such examples on the list you've provided.

6 0
3 years ago
If a system absorbs 155.0 kJ of heat from its surroundings and the system does 45.0 kJ of work on its surroundings, what is the
Ede4ka [16]

The change in the internal energy of the system is 110 kJ.

<h3>What is internal energy?</h3>

Internal energy is defined as the energy associated with the random, disorder motions of molecules.

calculate the change in internal energy, we apply the formula below.

Formula:

  • ΔU = Q-W.................... Equation 1

Where:

  • ΔU = Change in internal energy
  • Q = Heat absorbed from the surroundings
  • W = work done by the system

From the question,

Given:

  • Q = 115 kJ
  • W = 45. 0 kJ

Substitute these values into equation 1

  • ΔU = 155-45
  • ΔU = 110 kJ

Hence, The change in the internal energy of the system is 110 kJ.

Learn more about  change in internal energy here: brainly.com/question/4654659

4 0
3 years ago
What is the water pressure at a depth of 30m in pascals?
vaieri [72.5K]

❤❤❤❤❤❤❤❤❤❤❤❤❤❤

The water pressure at depth h from the water surface is obtained from the following equation.

Pressure = (density) \times (gravity \:  \: acceleration) \times (depth \:  \:  from \:  \: the \:  \: water \:  \: surface) \\

density = 1000 \:  \:  \frac{kg}{ {m}^{3} }

gravity \:  \: acceleration = 10 \:   \:  \frac{m}{ {s}^{2} }

depth \:  \: from \: \: the \:  \: the \:  \: water \:  \: surface = 30 \:  \: m \\

______________________________________

P = 1000 \times 10 \times 30

P = 300,000 \:  \: pascals

❤❤❤❤❤❤❤❤❤❤❤❤❤❤

6 0
3 years ago
A rock is rolled in the sand. It starts at 5.0 m/s, moves in
Lemur [1.5K]

Answer:

magnitude of the average acceleration is 4.16 m/s²

Explanation:

given data

initial velocity u = 5 m/s

distance s = 3 m

final velocity v = 0

to find out

magnitude of the average acceleration

solution

we will apply here linear motion equation that is

v²-u² = 2×a×s   ..............1

put here all these value

v is final velocity and u is initial velocity and s is distance

0²-5² = 2×a×3

a = -4.16

so magnitude of the average acceleration is 4.16 m/s²

3 0
4 years ago
Help please 10 pts and quick!
sweet [91]

Answer:

A

Explanation:

8 0
3 years ago
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