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Mumz [18]
4 years ago
13

A force is described by its __________________ and by the direction in which it acts.

Physics
1 answer:
noname [10]4 years ago
8 0
A force is described by its MAGNITUDE and by the direction in which it acts
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The substance that has gets broken down in a homogeneous mixture is the? 1.colloid 2.solution 3.solvent 4.solute
Andru [333]
2) solution gets broken down to solute and solvent.
4 0
3 years ago
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Moving water, like that of a river, carries sediment as it moves along its bed. The faster the water flows, the more sediment th
storchak [24]

It describes the river water going faster and slower which affects the force on the sediment particles. The heavier particles settle due to smaller force from slower water. The answer is C) The greater the force of the water, the faster the particle accelerates.

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3 years ago
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A force of 500 N is used to slide a box across a smooth surface; the box moved 5 m in 1.2 seconds. What power is used?
Katen [24]
F = 500N
S = 5m
T = 1.2s
----------------------------------
P = ?

We can use formula P = F * V, just because it was a smooth slide we can assume that average speed was V = S/T = 5 / 1.2 = 50/12

So the final answer would be:

P = F * V = 500 * 50/12

Are you sure those are correct numbers? The answer don't look nice :D



8 0
3 years ago
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A car of mass m, traveling at constant speed, rides over the top of a round hill. How do the normal force of the road on the car
dybincka [34]

Answer:

The normal force will be lower than the gravitational force acting on the car. Therefore the answer is N < mg, which is <em>option B</em>.

Explanation:

Over a round hill, the centripetal force acting toward the the radius of the hill supports the gravitational force (mg) of the car. This notion can be expressed mathematically as follows:

At the top of a round hill

Normal force = Gravitational force - centripetal force

At the foot of a round hill

Normal Force = centripetal force + Gravitational force

4 0
4 years ago
A heat engine receives heat of 400kW from a heat source of 1100 K, and rejects the waste heat into a heat sink at 320K. It gener
GuDViN [60]

Answer:

Explanation:

efficiency of carnot engine operating between 1100 K and 320 K

= 1100 - 320 / 1100

= .709

efficiency of heat engine = 120 / 400 = .30

2 nd law thermal efficiency of heat engine = .30 x 100  / .709

= 42.31 % .

4 0
3 years ago
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