Physics, 23.11.2021 09:40 sierravick123owr441

Without friction, what is the mass of an ball accelerating at 1.8 m/sec2 to which an an unbalanced force of 42 Newtons has been applied?
A 75.60 kg
B 00.04 kg
C 23.33 kg
D 43.80 kg

Answers: 2

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Answers

Answer from: ehsket

23.33 kg

Explanation:

The mass of the object can be found by using the formula

$m = \frac{f}{a} \\$

f is the force

a is the acceleration

From the question we have

$m = \frac{42}{1.8} = 23.3333... \\$

We have the final answer as

23.33 kg

Hope this helps you

Answer from: brianlykid3042

$\boxed {\boxed {\sf C. \ 23.33 \ kg}}$

Explanation:

According to Newton's Second Law of Motion, force is the product of mass and acceleration.

F=ma

The mass of the ball is unknown. The ball is accelerating at 1.8 meters per second squared. An unbalanced force of 42 Newtons is applied to the ball.

Convert the units of force. 1 Newton is equal to 1 kilogram meter per second squared, so our answer of 42 Newtons is equal to 42 kg*m/s².

F= 42 kg*m/s² a= 1.8 m/s²

Substitute the values into the formula.

$42 \ kg*m/s^1 = m * 1.8 \ m/s^2$

We are solving for the mass, so we must isolate the variable m. It is being multiplied by 1.8 meters per second squared. The inverse operation of multiplication is division. Divide both sides by 1.8 m/s².

$\frac {42 \ kg*m/s^2}{1.8 \ m/s^2} = \frac{a*1.8 \ m/s^2}{1.8 \ m/s^2}$

$\frac {42 \ kg*m/s^2}{1.8 \ m/s^2} =m$

The units of meters per second squared cancel.

$\frac {42 \ kg}{1.8 } =m$

$23.3333333 \ kg=m$

Round to the hundredth place. The 3 in the thousandth place tells us to leave the 3 in the hundredth place.

$23.33 \ kg \approx m$

The mass of the ball is approximately 23.33 kilograms.

Answer from: Quest

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

Answer from: Quest

there are no atoms

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