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sergij07 [2.7K]
3 years ago
5

Help me solve this. Someone help me pleeeaaaseee​

Physics
1 answer:
White raven [17]3 years ago
6 0

dddddddddddddddddddddddddddfghjk

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What’s the velocity of an 11-kilogram object with 792 joules of kinetic energy?
Brilliant_brown [7]

The historical method includes what steps?


5 0
3 years ago
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If you were going to build a nuclear power plant why wouldn't you build it in the middle of a desert
Tems11 [23]
You won't be able to get enough water for the reactor core cooling (you can use other methods , but more expensive) . The desert temprature is high at day, which will require additional cooling techniques to avoid over-heating the plant. Transmitting the electricity to the industrial , commercial and residual areas will cost more money, as you will need more transmission lines. Transporting the fuel to the desert will cost more at most.

Mostly this plants are established near seas.

6 0
4 years ago
If I wanted to generate a maximum emf of 20 V, what angular velocity (radians/sec, aka Hz) would be required given a circular co
MissTica

Answer:

35.36776 Hz

Explanation:

B = Magnetic field = 9\times 10^{-3}}\ T

E_m = Maximum voltage = 20 V

d = Diameter of coil = 40 cm = 0.4 m

A = Area = \pi \frac{d}{2}^2=\pi 0.2^2

N = Number of turns = 500

\omega = Angular velocity

Maximum emf is given by

E_m=NAB\omega\\\Rightarrow \omega=\frac{E_m}{NAB}\\\Rightarrow \omega=\frac{20}{500\times \pi\times 0.2^2\times 9\times 10^{-3}}\\\Rightarrow \omega=35.36776\ Hz

The angular velocity would be 35.36776 Hz

8 0
4 years ago
A ladder is slipping down a vertical wall. If the ladder is 10 ft long and the top of it is slipping at the constant rate of 4 ​
Andrei [34K]

Answer:

Speed will be: 1.33ft/s

Explanation:

If ladder is 10 ft long and bottom is 8 ft from the wall then by Pythagoras theorem we can find the height of the wall where ladder touches. (before it started slipping)

10^2 = 8^2 + x^2

thus x^2 = 100 - 64 = 36

Giving x= 6 ft. If the ladder is falling with a speed of 4ft/s it will take 1.5 seconds to cover the 6ft distance.

This shows that the bottom of ladder will travel from 8ft to 10 ft in 1.5 seconds. Thus covering 2 ft in 1.5 seconds making the speed to be:

v = S / t

v = 2 / 1.5

v = 1.33 ft/s

8 0
4 years ago
the gravitational force that earth exerts on the moon equals 2.03 x 10^20N. The moons mass is 7.35 x 10^22kg. What is the accele
Ghella [55]

The first time we read this, we think that we'll have to go look up a bunch of stuff about the gravitational constant, centripetal force, orbital mechanics, the Moon's period of revolution, and who knows whut owl !

But you know whut ?  The only thing we need is Newton's 2nd law:

F = m A

Divide each side by m :

Acceleration = Force / mass

Acceleration = (2.03 x 10²⁰ Newtons) / (7.35 x 10²² kg)

Acceleration = (2.03 x 10²⁰ / 7.35 x 10²² kg) (m/s²)

<em>Acceleration = 0.00276 m/s²</em>


8 0
3 years ago
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