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2 years ago

6

What is the power of a 650N force that moves an object 75cm in 0.63s?

1 answer:

Ratling [72]2 years ago

5 0

Answer:

<u>Power</u><u> </u><u>is</u><u> </u><u>7</u><u>7</u><u>3</u><u>.</u><u>8</u><u> </u><u>watts</u>

Explanation:

${ \rm{power = \frac{force \times distance}{time} }} \\ \\ { \rm{power = \frac{650 \times 0.75}{0.63} }} \\ \\ { \rm{power = 773.8 \: watts}}$

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The absolute magnitude of a star________.

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3 years ago

At what rate must a cylindrical spaceship rotate if occupants are to experience simulated gravity of 0.50 gg? Assume the spacesh

Svetradugi [14.3K]

Answer:

The time needed is $T = 16.8 s$

Explanation:

From the question we are told that

The magnitude of the stimulated acceleration due gravity is $a = 0.5 g$

The diameter of the spaceship is $d = 35m$

Generally the force acting on the spaceship is

$F = ma$

Given that the spaceship is rotating it implies that the force experienced by the occupant is a centripetal force so

$F = \frac{mv^2}{r}$

Thus

$ma = \frac{mv^2}{r}$

=> $\frac{v^2}{r} = a$

Generally the speed of this spaceship is mathematically represented as

$v = \frac{2 \pi}{T}$

=> $v^2 = [\frac{2\pi}{T}] ^2$

=> $\frac{\frac{4\pi^2 r^2}{T^2} }{r} = 0.5g$

=> $\frac{4 \pi^2 r }{T^2} = 0.5 g$

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4 0

3 years ago

Read 2 more answers

What is the momentum of an object with 5.22 kg and 1.7 m/s

BlackZzzverrR [31]

Answer:

8.874

Explanation:

You need to times 5.22 kg and 1.7 m/s to get 8.874.

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3 years ago

How many ohms of resistance must be present in a circuit that has 240 volts and a current of 15 amps?

PIT_PIT [208]

Answer:

16 ohms

Explanation:

V= I ⋅ R

where, V is the net potential difference in the circuit, I is the current in the circuit and R is the net resistance of the circuit.

In this case, V = 240 volts, I = 15 amperes.

240 = 15 ⋅ R

⇒ R = 240/ 15 = 16 ohms

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3 years ago

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A train accelerates to a velocity of 500 m/s over time of 2s. The acceleration it experienced was 50m/s2. What was its initial v

ValentinkaMS [17]

Explanation:

We know ,

v = u + at
u = v - at
u = 500 - 2*50
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3 years ago