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3 years ago

A 28 kg student stand on the surface of the Earth. What is the magnitude of the

Physics

1 answer:

Contact [7]3 years ago

4 0

Answer:

F = 274.68[N]

Explanation:

The gravitational force is equal to the weight of a body, or this case that of a person. Weight can be calculated by means of the product of mass by gravitational acceleration. In this way we have the following equation:

$F=m*g$

where:

F = force or weight [N]

m = mass = 28 [kg]

g = gravity acceleration = 9.81 [m/s²]

Now replacing:

$F=28*9.81\\F=274.68[N]$

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A student conducts an investigation on electricity and magnetism. Which relationship will the student discover between the curre

jekas [21]

Answer:

As current increases, the magnetic field strength increases.

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3 years ago

Substance A has a higher heat capacity than substance B. If the same amount of heat is added to both substances, which substance

pochemuha

The answer

The temperature of substance B will increase more rapidly than the temperature of substance A will.

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3 years ago

Read 2 more answers

• How can you find the temperature in Fahrenheit when its given in the Celsius scale? I

Ray Of Light [21]

Answer:

there are conversion scales used for doing that

to convert Celsius to Fahrenheit we use the formula,

T(°F) = T(°C) × 9/5 + 32

and to convert Fahrenheit to Celsius we use,

T(°F) = T(°C) × 5/9 + 32

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Explanation:

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3 years ago

A particle moves on a line away from its initial position so that after t hours it is s = 6t2 + 2t miles from its initial positi

docker41 [41]

32 mph
First, let's calculate the location of the particle at t=1, and t=4
t=1
s = 6*t^2 + 2*t
s = 6*1^2 + 2*1
s = 6 + 2
s = 8 t = 4
s = 6*t^2 + 2*t s = 6*4^2 + 2*4
s = 6*16 + 8
s = 96 + 8
s = 104
So the particle moved from 8 to 104 over the time period of 1 to 4 hours. And the average velocity is simply the distance moved over the time spent. So:
avg_vel = (104-8)/(4-1) = 96/3 = 32
And since the units were miles and hours, that means that the average speed of the particle over the interval [1,4] was 32 miles/hour, or 32 mph.

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3 years ago

The speaker at the concert has the sound intensity level of 100 dB if we listen from the distance 5 m.How far from the speaker d

Mademuasel [1]

Answer:

$28.11m$ far from the speaker the intensity drops to 85 dB.