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cestrela7 [59]
2 years ago
15

A 2,000 kg car travels with a tangential

Physics
1 answer:
Gekata [30.6K]2 years ago
3 0
A= v²/R
a = 12²/30 =4.8 m/s²
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When t= 1 a stone B is thrown vertically upwards from ground level with speed 5ms (ii) find t when a and b collide
Ksju [112]

Answer:

i don't know if this is good for you but

Explanation:

ignoring frictional air resistance (drag) the speed on return is the same as when it left the ground (5 m/s but in the opposite direction).

Note: this points out a good reason for not firing live bullets into the air..they will return somewhere and at the same speed.

However, if you take into account the atmospheric drag the reurn speed will be somewhat smaller (but in the case of a bullet, probably still lethal.) Drag depends on many factors and is difficult to calculate.

5 0
3 years ago
16) A man ran a 5 mile race. The race looped around a city park and back
finlep [7]

Answer:

The man's total displacement is equal to 0.

Explanation:

Given that,

A man ran a 5 mile race. The race looped around a city park and back  to the starting line.

We need to find the total displacement of the man.

We know that,

Displacement = shortest path covered

Also,

Displacement = final position - initial position

As it reaches back to its starting line, it means, the displacement is equal to 0.

Hence, the man's total displacement is equal to 0.

3 0
3 years ago
A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 m/s. How far did t
Furkat [3]
What are your answers?

3 0
3 years ago
Read 2 more answers
If you push on the sides of a filled balloon, how does the gas pressure inside the balloon change?
stepan [7]
The pressure in the balloon increases.
4 0
3 years ago
A piece of copper wire is formed into a single circular loop of radius 18 cm. A magnetic field is oriented parallel to the norma
MA_775_DIABLO [31]

Answer:

0.0956431731568 J

Explanation:

N = Number of turns = 1

r = Radius = 18 cm

A = Area = \pi r^2

\dfrac{dB}{dt}=\dfrac{0.54}{0.57}

Induced voltage is given by

V=NA\dfrac{dB}{dt}\\\Rightarrow V=1\times\pi 0.18^2\times \dfrac{0.54}{0.57}\\\Rightarrow V=0.096430359767\ V

Resistance is

R=2\pi rR/m\\\Rightarrow R=2\pi 0.18\times 4.9\times 10^{-2}\\\Rightarrow R=0.0554176944093\ \Omega

Power is given by

P=\dfrac{V^2}{R}\\\Rightarrow P=\dfrac{0.096430359767^2}{0.0554176944093}\\\Rightarrow P=0.167795040626\ W

Energy

E=Pt\\\Rightarrow E=0.167795040626\times 0.57\\\Rightarrow E=0.0956431731568\ J

The average electrical energy dissipated is 0.0956431731568 J

3 0
3 years ago
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