Answer:
19.01 N
Explanation:
F = Force being applied to the crate = 45 N
= Angle at which the force is being applied = 
Horizontal component of force is given by

The horizontal component of the force acting on the crate is 19.01 N.
Answer:
a. Point A
b. 20 V
c. 100 J
Explanation:
a. Point A is at a higher potential because there is a positive sign in front of its magnitude. Since it is a positive integral value, and has a higher magnitude than point B which is at -4, point A is thus at a higher potential than point B.
b. The potential difference between the two points ΔV = A - B
= +16 V - (-4 V)
= +16 V + 4 V
= + 20 V
c. The work done, W in moving a charge Q across a potential difference ΔV is W = QΔV
So, since Q = 5 C and ΔV = + 20 V
W = QΔV
= 5 C × (+ 20 V)
= 100 J
Answer:

Explanation:
Force is the product of mass and acceleration.

We can find mass, since we know the acceleration and force.
The acceleration is 14 meters per square second. The force is 280 Newtons, but we should convert the units to make the problem simpler later on.
- 1 kilogram meter per square second is equal to 1 Newton.
- 280 Newtons are equal to 280 kg*m/s²

Substitute the values into the formula.

We want to solve for the mass or m. Therefore we must isolate the variable on one side of the equation.
m is being multiplied by 14 m/s². The inverse of multiplication is division. Divide both sides of the equation by 14 m/s²


The m/s² will cancel, which is why we converted the units earlier.


The mass of the object is <u>20 kilograms.</u>