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Drupady [299]
4 years ago
7

How much power does it take to lift a 5.00 kg mass at a constant speed by 3.00 m in 2.50 s? Unit=W

Physics
1 answer:
nydimaria [60]4 years ago
4 0
The weight/force of the object is F = mg = (5.00 kg)(9.81 m/s^2) = 49.05 N
The work done in moving the object is W = Fd = (49.05 N)(3.00 m) = 147.15 J
The power required to accomplish this work in 2.50 s is P = W/t = 147.15 J / 2.50 s = 58.86 Watts

Power requirement increases with increased weight and increased distance, but decreases with increased time.
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As they are Alkali metals (group 1), they are extremely reactive in both air and water so must be stored in kerosine to stop them from reacting with the air or water.
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What kind of scientist investigation involve making observations
Ivahew [28]
When you study animals.
6 0
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Read 2 more answers
PLEASE ASAP ILL GIVE BRAINLIEST.
taurus [48]

Answer:

applied force

Explanation:

any force where you push or pull is always applied force.

4 0
3 years ago
g A loop circuit has a resistance of R1 and a current of 2 A. The current is reduced to 1.4 A when an additional 2.2 Ω resistor
Mrrafil [7]

Answer:

R1 = 5.13 Ω

Explanation:

From Ohm's law,

V = IR............... Equation 1

Where V = Voltage, I = current, R = resistance.

From the question,

I = 2 A, R = R1

Substitute into equation 1

V = 2R1................ Equation 2

When a resistance of 2.2Ω is added in series with R1,

assuming the voltage source remain constant

R = 2.2+R1,  and I = 1.4 A

V = 1.4(2.2+R1)................. Equation 3

Substitute the value of V into equation 3

2R1 = 1.4(2.2+R1)

2R1 = 3.08+1.4R1

2R1-1.4R1 = 3.08

0.6R1 = 3.08

R1 = 3.08/0.6

R1 = 5.13 Ω

6 0
3 years ago
Based on the tug of war pictured below, what is the net force? –190 N 10 N –10 N 190 N.
umka21 [38]

Force is defined as the push or pull applied to the body. Its unit is Newton. The net force will be 10 N on the right side.

What is force?

Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body. Force is defined as the product of mass and acceleration. Its unit is Newton.

The given data in the problem is;

F₁ is forced by person 1 = 100 N

F₂ is forced by person 2= 90 N

Fₓ is the net force

Fₓ = F₁ -F₂

Fₓ  = 100-90

Fₓ= 10 N

Hence the net force will be 10 N on the right side.

To learn more about the force refer to the link;

brainly.com/question/26115859

7 0
3 years ago
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