2 years ago

Which effect has been useful (and successful) in the search for and identification of black holes in the universe

Physics

1 answer:

kvasek [131]2 years ago

4 0

Answer:

Detection of x-rays from a binary star undergoing mass exchange, where mass of component star can be determined.

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A plate falls to the floor. When is its potential energy

Anna35 [415]

Answer:

I think it's 3

Explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

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3 years ago

The planting of trees is determined to soil because it drains the soil of nutrients True or false

frutty [35]

True

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3 years ago

The spring in the muzzle of a child's spring gun has a spring constant of 730 N/m. To shoot a ball from the gun, first the sprin

Korolek [52]

Answer:

a. V=11.84 m/s

b.x=0.052m

Explanation:

a).

Given

$K=730 N/m$ , $m=0.053kg$ , $h=1.90m$ .

$v_f^2=v_i^2+2*g*h$

$v_i^2=2*g*h=2*9.8m/s^2*1.9m$

$v_i=\sqrt{2*9.8m/s^2*1.9m}=\sqrt{37.24 m^2/s^2}$

$v_i=6.1 m/s$

$v_i=V*sin(31)$

$V=\frac{v_i}{sin(31)}=\frac{6.1m/s}{sin(31)}$

$V=11.84 m/s$

b).

$K_k=\frac{1}{2}*K*x^2$

No friction on the ball so:

$x^2=\frac{2*K_k}{K}$

$x=\sqrt{\frac{2*0.053kg*9.8m/s^2*1.9m}{730N/m}}$

$x=\sqrt{2.7x10^{-3}m^2}=0.052m$

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3 years ago

An object needs a force of 152 Newtrons to move 8 meters. How much work is required?

GuDViN [60]

Answer:

960J

Explanation:

Given parameters:

Force = 120N

Distance = 8m

Unknown:

Work required = ?

Solution:

The work done by a body is the force applied to move a body in a specific direction.

Work done = Force x distance

Insert the parameters and solve;

Work done = 120 x 8 = 960J

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3 years ago

What is the process by which engine fuels burn

BigorU [14]

It burns when you start your car and that conducts electricity which burns it.

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3 years ago

Read 2 more answers