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4 years ago

A force of 5 N accelerates an object. The object’s mass is 50 g. What is the acceleration of the object? (Formula: F=ma)

Physics

1 answer:

natima [27]4 years ago

3 0

Explanation:

F = ma

5 N = (0.050 kg) a

a = 100 m/s²

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What is the energy of an electromagnetic wave that has a frequency of 5.0 x 10⁵ Hz?

Valentin [98]

Answer: 3.3 x 10^-28 J

Explanation: just answered on a quiz!! :)

5 0

3 years ago

A person hangs from a nylon rope (Young's modulus of 5 x 109 N/m2) as seen in the picture below. The rope stretches by 2 % and h

disa [49]

Answer:

959183.7 kg

Explanation:

from the question we have :

young modulus = 5 x 10^{9} N/m^{2}

strain = 2% = 2÷100 = 0.02

diameter = 0.03 m

radius = 0.015 m

acceleration due to gravity (g) = 9.8 m/s^{2}

we can get the mass from the formula below

young modulus = stress ÷ strain

where

stress = \frac[force}{area} = \frac {mass x g}{area}

area = 2πr = 2π x 0.015 = 0.094

therefore

young modulus = \frac{\frac {mass x g}{area}}{strain}

5 x 10^{9} = \frac{\frac {mass x 9.8}{0.094}}{0.02}

mass = \frac{5 x 10^{9} x 0.02 x 0.094}{9.8}

mass = 959183.7 kg

8 0

3 years ago

Define time period. Give its formula.

kondaur [170]

Answer:

Part A

Time period, designated by the symbol, 'T', is defines as the time it takes for a complete cycle of an oscillation or vibration (of a wave) to transit through a given point.

The longer the time period of a wave, the lower the frequency of the wave

The unit of the time period is seconds, 's'

Part B

Mathematically, the formula for the time period is presented as follows;

f = 1/T

∴ T = 1/f

f = v/λ

∴ T = λ/v

Where;

v = The velocity of the wave;

λ = The wavelength of the wave

Explanation:

7 0

3 years ago

IgorC [24]

Answer:

Speed = 300 m/s

Explanation:

Given the following data;

Frequency = 30 Hz

Wavelength = 10 m

To find the speed of the wave;

Mathematically, the speed of a wave is given by the formula:

$Speed = wavelength * frequency$

Substituting into the formula, we have;

$Speed = 10 * 30$

Speed = 300 m/s

6 0

3 years ago

Suppose there is a soccer ball (2Kg) and a baseball (1 Kg) on a shelf. They are both 1 m above the floor. Which one has the larg

VikaD [51]

Let's calculate the gravitational potential energy of both objects by using the equation:
$U=mgh$
where
m is the mass of the object
g is the gravitational acceleration
h is the height of the object above the ground

For the soccer ball (m=2 kg), the gravitational potential energy is
$U=mgh=(2 kg)(9.81 m/s^2)(1 m)=19.6 J$
While for the basketball (m=1 kg) the gravitational potential energy is
$U=mgh=(1 kg)(9.81 m/s^2)(1 m)=9.8 J$

Therefore, we see that the soccer ball has larger gravitational potential energy than the basketball.

4 0

3 years ago