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3 years ago

Which planet has surface features that are most like those on jupiter?

1 answer:

5 0

I can say it is Saturn the planet next to Jupiter, because of same composition of mostly hydrogen and traces of helium and other elements and like Jupiter,Saturn has rings and both has relative temperature and release Infrared radiation than the sun gives to them.

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What is the effect of decreasing the use of fossil fuel on animals threatened by extinction?

Eduardwww [97]

Answer:

Decreasing the use of fossil fuels will improve the wellbeing of animals (and people, for that matter). Burning fossil fuels like coal and using oil and other limited resources has polluted the biosphere, and this has had an adverse impact on many animals. If we were to limit this, it would no doubt improve their situation and make them less likely to extinction.

7 0

3 years ago

A(n)<br> reverses the flow of current through an electric motor.

Andrews [41]

Answer:

Commutator reverses the flow of current through an electric motor

Explanation:

4 0

4 years ago

Read 2 more answers

A diver who weighs 500 N steps off a diving board that is 10 m above the water. The diver hits the water with kinetic energy of_

Ksju [112]

Answer:

Diver hits the water with kinetic energy of 5000 J

Explanation:

We have given weight of the diver F = 500 N

Diver steps off a diving board which is 10 m above the water

So work don by diver $W=force\times distance=500\times 10=5000J$

Now according to energy theorem work done is equal to kinetic energy

So kinetic energy will be equal to 5000 J

So diver hits the water with kinetic energy of 5000 J

6 0

3 years ago

Which three quantities can be used to calculate acceleration?

ikadub [295]

The correct option will be
D. Time, initial velocity and final velocity
The Formula can be written as,
Acceleration=Final velocity-Initial Velocity/Time

5 0

3 years ago

An electric fan is turned off, and its angular velocity decreases uniformly from 550 rev/min to 180 rev/min in a time interval o

Sergio039 [100]

Answer:

(a) $\alpha =-1.43rev/sec^2$

(b) 4.17 rev

Explanation:

We have given the angular velocity of fan decreases from 550 rev/min to 180 rev/min

So initial angular speed $\omega _0=550rev/min=\frac{550}{60}=9.166rev/sec$

Final angular speed $\omega =180rev/min=\frac{180}{60}=3rev/sec$

Time is given as t = 4.3 sec

(a) We know that angular acceleration is given by $\alpha =\frac{\omega -\omega _0}{t}=\frac{3-9.166}{4.3}=-1.43rev/sec^2$

(b) We know the relation \Theta =\omega _0t+\frac{1}{2}\alpha t^2=9.166\times 4.3-\frac{1}{2}\times 1.43\times 4.3^2=26.1935rad=\frac{26.1935}{2\pi }=4.17rev

So time $t=\frac{0-9.166}{-1.43}=6.40sec$

5 0

3 years ago