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galben [10]
3 years ago
7

PLEASE HELP WITH ONE QUESTION!

Physics
1 answer:
nata0808 [166]3 years ago
6 0
I think it is -3.99 x 102 j
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1. Explain who is doing more work and why: a bricklayer carrying bricks and placing them on the wallof a building being
Basile [38]
Both are doing because they have chorus
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2 years ago
When astronauts get on a rocket and go outside Earth they float because gravity is affected by this
V125BC [204]

Answer:

Distance

Explanation:

Gravity is indirectly related to distance. This means if distance increases, gravitational pull decreases.

8 0
3 years ago
A flea walking along a ruler moves from the 45 cm mark to the 27 cm mark. It does this in 3 seconds. What is the speed? What is
Alekssandra [29.7K]

Answer:

Speed= 6cm/s and velocity= 6cm/s in the negative direction

Explanation:

the change in position is from 45cm to 27 cm (moving towards the negative x direction)

\Delta x = 45 cm - 27 cm = 18 cm

And the change in time:

\Delta t= 3 s

Now we must define the difference between speed and velocity:

Speed is a scalar quantity, which means that it is a number. Velocity ​​is also a number but you must also indicate the direction of the movement.

Thus, the speed is:

speed= \Delta x/ \Delta t = 18cm/3s=6cm/s

An the velocity is:

6cm/s in the negative direction

8 0
3 years ago
What is the time feather to fall to the surface of the moon ?
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3 years ago
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly six months, as measured by
QveST [7]

Answer:

0.999958c

Explanation:

Remember that the trip involves traveling for six months at a constant velocity thus returning home at same speed . The time interval of this trip will therefore be one year.

Accurate time interval to be measured by the clock on the spaceship Δt0 = 1.0 years

Time interval as advanced on earth observed from the spacecraft Δt = 110 years

the formula for time dilation is

Δt = Δt0 /√(1-v2/c2)

or v = c*√1-(Δt0/Δt)2

=c*√[1-(1year/110years)2]

= 0.999958c

3 0
3 years ago
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