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3 years ago

Which of these bikes shows potential energy?

Physics

1 answer:

vodomira [7]3 years ago

4 0

Answer:

A The biker on the left

Explanation:

The biker on the left has gravitational potential energy because he is not going down the hill yet. Kinetic energy is the energy of an object in motion, while potential energy is the potential for energy of an object at rest. You can see the motion lines around the biker on the right because he is moving.

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plz i need help fast................a motion along a straight line with a constant increase in velocity is ?

Monica [59]

Answer:

uniform acceleration

Explanation:

The definition for uniform acceleration is:

if an object travels in a straight line and its velocity increases or decreases by equal amounts in equal intervals of time, then the acceleration is said to be uniform.

Hope this helps.

Good Luck

8 0

4 years ago

Read 2 more answers

An equation for the period of a planet is 4 pie² r³/Gm where T is in secs, r is in meters, G is in m³/kgs² m is in kg, show that

marishachu [46]

Answer:

$\displaystyle T = \sqrt{\frac{4\, \pi^{2} \, r^{3}}{G \cdot m}}$ .

The unit of both sides of this equation are $\rm s$ .

Explanation:

The unit of the left-hand side is $\rm s$ , same as the unit of $T$ .

The following makes use of the fact that for any non-zero value $x$ , the power $x^{-1}$ is equivalent to $\displaystyle \frac{1}{x}$ .

On the right-hand side of this equation:

$\pi$ has no unit.
The unit of $r$ is $\rm m$ .
The unit of $G$ is $\displaystyle \rm \frac{m^{3}}{kg \cdot s^{2}}$ , which is equivalent to $\rm m^{3} \cdot kg^{-1} \cdot s^{-2}$ .
The unit of $m$ is $\rm kg$ .

$\begin{aligned}& \rm \sqrt{\frac{(m)^{3}}{(m^{3} \cdot kg^{-1} \cdot s^{-2}) \cdot (kg)}} \\ &= \rm \sqrt{\frac{m^{3}}{m^{3} \cdot s^{-2}}} = \sqrt{s^{2}} = s\end{aligned}$ .

Hence, the unit on the right-hand side of this equation is also $\rm s$ .

8 0

3 years ago

2. The element 4 X has how many protons?

noname [10]

Answer:4?

Explanation:

5 0

3 years ago

If you run a 500 W computer for 4 hours, your electric meter will read ____; this is a measure of _______ "used"

emmasim [6.3K]

Answer:

If you run a 500 W computer for 4 hours, your electric meter will read 2kWh; this is a measure of energy "used". The correct answer is D.

Explanation: Energy is defined as the capacity of doing work and is occurs in different forms( electrical, kinetic, potential energy). Electrical energy consumption can be calculated or measure through the multiplication of the power( W or kW) used by the number of hours during which the power is consumed. Therefore the unit of energy is kWh. From the question,

500W was used for 4 H

Therefore energy consumed

500× 4= 2000Wh. To convert to kWh

Divide by 1000,

2000÷ 1000= 2.

There energy consumed in kWh is,

2kWh energy.

7 0

3 years ago

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Which type of change is freezing water an example of?

Sloan [31]

Answer:

phase transitions

Explanation:

3 0

4 years ago