4 years ago

Which of the following does not serve as a way to neutralize the charge in a body?

Physics

1 answer:

Brrunno [24]4 years ago

5 0

Answer:

B. Adding more protons to a positively charged body until the number of protons matches the number of electrons

Explanation:

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What is the acceleration of a car initially traveling at -5m/s and<br> reaching -22m/s in 3s.

lozanna [386]

Answer:

$a=-5.67\ m/s^2$

Explanation:

Given that,

Initial velocity, u = -5 m/s

Final velocity, v = -22 m/s

Time, t = 3s

We need to find the acceleration of the car. The formula of it is given by :

Acceleration,

$a=\dfrac{v-u}{t}\\\\a=\dfrac{(-22)-(-5)}{3}\\\\a=-5.67\ m/s^2$

So, the acceleration of the car is $-5.67\ m/s^2$ .

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3 years ago

A train travels for 120 seconds (s) at a speed of 50 meter per second (m/s). What was the distance (m) that it travelled?

Ivahew [28]

Answer:

Explanation:

50 times 2

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3 years ago

A student drops an object from rest above a force plate that records information about the force exerted on the object as a func

OLEGan [10]

Answer:

A. The mass of the object

Explanation:

p = mv

p = momentum

m = mass

v = velocity

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3 years ago

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A pipe of length 4 m open at one end resonates with the 11th harmonic of a frequency. What is the wavelength of the frequency?

Brilliant_brown [7]

You use the equation wavelength= 4 x length of pipe/ number of the harmonic so your wavelength is 1.45.

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4 years ago

A basketball player jumps straight up for a ball. To do this, he lowers his body 0.300 m and then accelerates through this dista

cluponka [151]

Answer:

4.20214231077 m/s

29.429 m/s²

4316.29 N

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s²

m = Mass of player = 110 kg

Equations of linear motion

$v^2-u^2=2as\\\Rightarrow -u^2=2as-v^2\\\Rightarrow u=\sqrt{v^2-2as}\\\Rightarrow u=\sqrt{0^2-2\times -9.81\times 0.9}\\\Rightarrow u=4.20214231077\ m/s$

The velocity is 4.20214231077 m/s

$v^2-u^2=2as\\\Rightarrow a=\dfrac{v^2-u^2}{2s}\\\Rightarrow a=\dfrac{4.20214231077^2-0^2}{2\times 0.3}\\\Rightarrow a=29.429\ m/s^2$

The acceleration is 29.429 m/s²

Force is given by

$F=m(a+g)\\\Rightarrow F=110(29.429+9.81)\\\Rightarrow F=4316.29\ N$

The force he exerts is 4316.29 N

6 0

3 years ago