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Anon25 [30]
4 years ago
8

What is the potential of a 10kg book that is placed on a shelf that is 2.5 meters high

Physics
1 answer:
AveGali [126]4 years ago
7 0

Answer:

250 J

Explanation:

U = mgh

U = 10 *10 * 2.5 = 250 J

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A charge of 6.65 mC is placed at each corner of a square 0.500 m on a side.
mixer [17]

Answer:

Explanation:

Given that:

length of side , a = 0.5 m

charge , q = 6.65 mC

length of diagonal , d = 0.5 * sqrt(2)

d = 0.707 m

F is the force due to adjacent particle ,

F1 is the force due to diagonal particle

Now , for the net charge on a particle

Fnet = 2 * F * cos(45) + F1

Fnet = 2*cos(45) * k * q^2/a^2 + k * q^2/d^2

Fnet = 9*10^9 * 0.00665^2 * (2* cos(45)/.5^2 + 1/.707^2)

Fnet = 3.05 *10^6 N

the magnitude of net force acting on each particle is 3.05 *10^6 N

part B)

for the direction of particle

d) along the line between the charge and the center of the square outward of the center

7 0
3 years ago
A 1000-kg car rolling on a smooth horizontal surface ( no friction) has speed of 20 m/s when it strikes a horizontal spring and
spayn [35]

Explanation:

kinetic energy was converted to potential energy in the spring.

the answer is in the above image

6 0
3 years ago
A wind generator, such as the one shown , uses the power of wind to generate electricity What do you think is happening inside t
chubhunter [2.5K]

Answer:

The wind spins blades of a wind turbine around a rotor, which spins a generator, which creates electricity (a generator converts mechanical energy into electricity).

5 0
3 years ago
What is decay constant?​
Sloan [31]
The size of atoms is the answer
3 0
3 years ago
A couple walking in the park strolls 1.5 km in 60 min. What is the couple’s average speed in m/h?
cricket20 [7]

Answer:

0.932 m/h

Explanation:

Parameters given:

Distance walked by couple, D = 1.5 km

Time spent in walking, t = 60 min

To solve this we simply apply the formula for average peed:

Average Speed = total distance / total time taken

The question asks specifically to put the answer in miles per hour (m/h), hence, we need to convert the distance to miles and the time to hours:

Distance in miles:

1 km = 0.622 miles

1.5 km = 1.5 * 0.622 = 0.932 miles

Time in hours = 60 / 60 = 1 hour

Hence, the speed is:

Speed = 0.932 / 1 = 0.932 m/h

The average speed of the couple is 0.932 m/h

6 0
3 years ago
Read 2 more answers
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