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Deffense [45]
3 years ago
13

A vehicle start moving at 15m/s. How long will it take to stop at a distance of 15m?​

Physics
1 answer:
Alekssandra [29.7K]3 years ago
3 0

Answer:

Explanation:

Speed= distance/time

Or time = distance/speed

According to your question

Speed=15m/s

and. Distance=1.2km. ,we must change kilometer in meter because given speed is in m/s

D= 1.2km = 1.2×1000m =1200meter

Time = distance/ speed

1200/15 =80second

Or. 1min and 20 sec will be your answer.

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Force is all the same, but pressure will be higher on 3cm
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Fossil fuels are burned, transferring their chemical potential energy to heat energy. How are nuclear power stations different?
labwork [276]

Answer:

fossil fuels are natural and limited, nuclear is man made and more toxic

Explanation:

6 0
3 years ago
When the Voyager 2 spacecraft sent back pictures of Neptune during its flyby of that planet in 1989, the spacecraft’s radio sign
Ratling [72]

Answer:

<em>a) 28877 AU</em>

<em>b) 1.795 sec</em>

<em></em>

Explanation:

Time it took the radio signal to reach earth = 4 hours = 4 x 3600 = 14400 s

speed of radio signal = speed of vacuum speed of light  = 3 x 10^8 m/s

Distance traveled by this signal = speed x time

distance = 3 x 10^8 x 14400 = 4.32 x 10^12 m

One Astronomic unit AU is the distance between the Earth and the sun and it is approximately equal to 1.496 x 10^8 m

The distance traveled by the signal in AU = (4.32 x 10^12)/(1.496 x 10^8) = <em>28877 AU</em>

b) The minimum separation between Earth and Mars = 0.36 AU

This distance = 0.36 x 1.496 x 10^8 = 538560000 m

Time that will be taken for a radio signal to travel this distance = distance/speed

==> 538560000/(3 x 10^8) = <em>1.795 sec</em>

5 0
3 years ago
The electric potential in a region of uniform electric field is -1600 V at x = -1.30 m and + 2000 V at x =+ 1.80 m . What is Ex?
Inga [223]

Answer:

-1161.29 V/m

Explanation:

The x component of electric field will be given by

E_x= -\frac {\triangle V}{\triangle x}

Here \triangle V is the change in voltage while triangle x is the change in x

E_x= -\frac {+2000 V--1600V}{\triangle 1.8--1.3}=-\frac {3600}{3.1}=-1161.29 V/m

6 0
3 years ago
Which of the following will increase the strength of a copper electromagnet?
Lemur [1.5K]

Answer:D & E are your answers just took the quiz in APEX

Explanation:

5 0
3 years ago
Read 2 more answers
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