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4 years ago

Length is measured in

Physics

1 answer:

morpeh [17]4 years ago

7 0

It can be measured in cubic units, kilometers, meters, feet, or centimeters.

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4 What type of circuit is described by each of the following statements?

zheka24 [161]

B. the current in the circuit divides so that some flows through one component

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3 years ago

Kyle, a 80.0 kg football player, leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.

vagabundo [1.1K]

Answer:

The velocity of ball is 23.19 m/s

Explanation:

Given that,

Mass of football player = 80.0 kg

Mass of ball = 0.430 kg

Distance = 0.538

We need to calculate the time

Using equation of motion

$s = ut+\dfrac{1}{2}gt^20.538=0+\dfrac{1}{2}\times9.8\times t^2t^2=\dfrac{2\times0.538}{9.8}t=\sqrt{\dfrac{2\times0.538}{9.8}}t=0.33\ sec$

We need to calculate the velocity

Using formula of velocity

$s=v\times tv=\dfrac{s}{t}\\Put the value into the formula\\v=\dfrac{0.0409}{0.33}\\v=0.124\ m/s\\$

We need to calculate the velocity of ball

Using conservation of momentum

$m_{1}v_{1}+m_{2}v_{2}=mv$

Put the value into the formula

$80.0\times0.124+0.430\times0.124=0.430\times v\\v=\dfrac{9.97332}{0.430}\\v=23.19\ m/s$

The velocity of ball is 23.19 m/s

3 0

4 years ago

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if you exert 10.0 N of force to compress a spring 50 cm from its equilibrium point, then what is the spring constant?

Olegator [25]

The answer would be: b. The spring constant is 20 N/m

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4 years ago

Choose the true statement concerning the mass of subatomic particles.A.Electrons are more massive than protons.B.Electrons are m

Degger [83]

Answer is C. Because protons and neutrons are more massive then electrons so that means A and b and C are not right

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4 years ago

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Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with the

scoundrel [369]

Answer:

F = 0.1575 N

Explanation:

When the third sphere touches the first sphere, the charge is distributed between both spheres, then now the first sphere has only half of his original charge.

In this moment then

Sphere one has a charge = Q/2

Sphere three has a charge = Q/2

Now when the third sphere touches the second sphere again the charge is distributed in a manner that both sphere has the same charge.

How the total charge is Q = Q/2 + Q = 3/2Q, when the spheres are separated each one has 3/4Q

Sphere two has a charge = 3/4Q

Sphere three has a charge = 3/4Q

The electrostatic force that acts on sphere 2 due to sphere 1 is:

F = $\frac{kQ_{1}Q_{2} }{r^{2} }$

F= $\frac{K(Q/2)(3Q/4)}{r^{2} }$

how $\frac{KQ^{2} }{r^{2} }$ = 0.42

Then

F = $\frac{0.42*3}{8}$

F = 0.1575 N

3 0

3 years ago