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emmasim [6.3K]
3 years ago
13

Please help me on this 1 assignment im giving 25 points GOOD LUCK!

Physics
1 answer:
kati45 [8]3 years ago
3 0

Answer:

Explanation:

im sorry if this doesn't help but i think  its A

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We know that religion was important to healthcare practices in ancient Egypt the best support this is
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8 0
3 years ago
Read 2 more answers
A baby carriage is sitting at the top of a hill that is 21 m high The carriage with the baby weighs 12 N
WITCHER [35]

Answer:E

=

252

J

Explanation:

The total mechanical energy of an object or system is given by:

E

m

e

c

h

=

K

+

U

Where

K

is the kinetic energy of the object and

U

is the potential energy of the object. The carriage, sitting motionless at the top of the hill, has only potential energy in the form of gravitational potential energy.

Gravitational potential energy is given by:

U

g

=

m

g

h

Where

m

is the mass of the object,

g

is the gravitational acceleration constant, and

h

is the height of the object above some specific reference point, in this case the ground

21

m

below.

The weight of a stationary object at the surface of the earth is equal to the force of gravity acting on the object.

W

=

→

F

g

=

m

g

We are given that the carriage weighs

12

N

, therefore

m

g

=

12

N

.

U

g

=

12

N

⋅

21

m

⇒

U

g

=

252

N

m

=

252

J

Answer link

Explanation:

5 0
3 years ago
if the angle btw the incline and horizontal surface is increased what will happen the magnitude of force needed to hold the obje
Scilla [17]

Answer:

The force needed will be greater to hold the object at rest.

Explanation:

For a better understanding let's take a look at the attached image.

In the image there is an example of this condition, we have an object of 3 kg-f mass, the first angle between the horizontal and the inclined plane is 35°. When we increase the angle to 45°. We can realize that we need to hold the object with a stronger force.

The calculation and the equations based on Newton's laws can be found in the attached image.

6 0
3 years ago
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