If an object weighing 32lbs is acted upon by a net force of 32 lbs, what will be its acceleration?

Answers

Answer 1

Answer: That"s exactly the situation when you drop the object off the roof or out of a tree... then the net force on it is the ONLY force on it, I.e. the force of gravity, and its acceleration is the acceleration due to gravity ... 32 ft/sec^2 .

Answer 2

Answer:
the acceleration would be 0 because lifting force up Is the same as the gravity going down. And therefore will not accelerate. The object has no net force

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5.25 calories are absorbed by an iron nail. How many joules is this?

Answers

1 kilo-calorie= 4184 joules
0.001 kilo-calorie= 1 calorie

therefore 5.25 calorie=21.966 joules

Answer : 5.25 Calories is equivalent to 21.966 Joules.

Explanation :

The capacity to do any work is called its energy. Its SI unit is joules. Another unit of energy is joules.

The relation between the calorie and the joule is :

$1\ calorie=4.184\ J$

To convert 5.25 calories to joules we have to use unitary method i.e.

$5.25\ calories=5.25* 4.184\ J$

So, 5.25 C = 21.966 Joules.

Hence, this is the required solution.

A 3,000-N force gives an object an acceleration of 15 m/s2. The mass of the object is

Answers

Answer:

force= mass x acceleration

3000 N = m x 15

m= 3000/15

m=200 kg

When using a moveable pulley to lift an object, _______ of the object's weight is supported by the section of rope attached to the ceiling. This is why a moveable pulley requires _______ effort force than a fixed pulley to lift an object. A. half, less B. all, less C. half, more D. all, more

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Answer:

UGHH IT WAS HALF AND LESS OMG :(

Explanation:

Solar cells convert what type of energy into electrical energy?

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In what must certainly rank as one of the most startling coincidences
in all of science and technology, the cells referred to as "solar" perform
their function by deriving electrical energy from the energy in "solar" radiation.

Scientists use models to A) increase the duration of a volcanic eruption
B) change the location of a volcanic eruption
C) predict the damages due to an earthquake
D) stop the occurrence of tsunamis due to an earthquake

Answers

D Is Thw Correct answer

Why gravitational force at the center og earth is zero

Answers

F = G Mm/r²
mg = G Mm/r²
g = GM/r²
At centre of earth, r=0
g = GM/0
g =0

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Why value of 'g' is zero at center of Earth?

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When we move towards centre of earth, the mass is equally distributed in all directions.

The mass beneath you = Mass in front of you = Mass behind you

Thus, all the gravitational forces applied cancel each other and acceleration due to gravity (g) at centre of earth on centre of earth becomes zero (0).

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