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Semenov [28]
3 years ago
13

when you boil water to make pasta hot water from the bottom of the pan carries thermal energy to water molecules at the top the

pan . This is an example of
Physics
1 answer:
FrozenT [24]3 years ago
7 0

Answer:

photosynthesis

Explanation:

not sure heat i think

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If the distance between two asteroids is doubled, the gravitational force they exert on each other will.
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The force will be 4 times smaller.
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49. A block is pushed across a horizontal surface with a
nata0808 [166]

Answer:

(a) 37.5 kg

(b) 4

Explanation:

Force, F = 150 N

kinetic friction coefficient = 0.15

(a) acceleration, a = 2.53 m/s^2

According to the newton's second law

Net force = mass x acceleration

F - friction force = m a

150 - 0.15 x m g = m a

150 = m (2.53 + 0.15 x 9.8)

m = 37.5 kg

(b) As the block moves with the constant speed so the applied force becomes the friction force.

F = \mu m g \\\\150 = \mu\times 37.5\\\\\mu = 4

8 0
3 years ago
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1 different

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3 years ago
Which option is the most accurate description of speed?
puteri [66]
B I think is the answer
5 0
3 years ago
A 50 kg bicyclist, traveling at a speed of 12 m/s, applies the brakes, slowing her speed to 3 m/s.
Bezzdna [24]

a) Work done = Net Kinetic Energy

= 1/2 x 50 kg x ((12m/s)^2 - (3m/s)^2)

= 0.5 x 50 Kg x (144 -9)(m/s)^2

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b) Force = mxa

a = 120 N/50 Kg = 2.4 m/s^2

Using newtons third law of motion, we get-

V^2 - U^2 = 2 x a x S

S= (12^2-3^2)m^2/s^2/(2 x 2.4 m/s^2)

= 28.125 m


3 0
3 years ago
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