Infer whether a system can have kinetic energy and potential energy at the same time

1 answer:

4 0

Yes, an object can have both of these at the same time. Potential energy is energy that is stored in an object. Kinetic energy is the energy that is associated with motion. So what you have to have is an object that is in motion but still has more energy that it has yet to convert into kinetic energy.

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In a thunderstorm at 32.0°C, Reginald sees a bolt of lightning and hears the thunderclap 2.00s later. How far from Reginald did

ratelena [41]

Answer:

dont have the answer but you cute

Explanation:

5 0

3 years ago

Pls someone help with number 3

mars1129 [50]

Rocket thrust equation
= ( mass flow rate of fuel burnt ) X (Velocity of gas ejected ) + ( Exit Pressure - Outdoor Pressure ) X ( Area of exhaust )

In this case, we can assume the exit pressure = outdoor pressure and since area of exhaust is not given, it can be assumed to be negligible.

In this case, by Newton 3rd’s law,

Force exerted by gas on rocket
= Force exerted by rocket on gas
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3 years ago

Which of the following are true about renewable resources?

Oksana_A [137]

Answer:

option A

Explanation:

renewable resources are replenishable that means they can't be depleted

6 0

2 years ago

2. What current flows through a hair dryer plugged into a 110 Volt circuit et it as a te

JulsSmile [24]

Explanation:

V =I*R

I= V/I

I=110/25

I= 4.4 Amps

8 0

3 years ago

How fast can the 140 a current through a 0.200 h inductor be shut off if the induced emf cannot exceed 80.0 v?

Vesna [10]

Recall that to compute for the emf of a circuit given current and inductance, we must recall that

$emf = - M \frac{\Delta I }{\Delta t}$

where I is the current (A), M is the mutual inductance (h), and t is the time (ms). Since the current must not exceed 80.0 V, we have

$80.0 \geq 0.200(\frac{140}{t})$
$t \geq \frac{28.0}{80}$
$t \geq 0.35$

From this, we see that it must take at least 0.35 ms so it doesn't exceed 80 V.
Answer: 0.35 ms

7 0

3 years ago