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

answered: 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

answered: 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.

answered: Guest

Ibelieve the answer is b. dugout

answered: Guest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: