2 years ago

What is the net work done on the object over the distance shown?

Physics

1 answer:

enyata [817]2 years ago

3 0

Answer:

Explanation:

the positive cancels out the negative area

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Gamma radiation is... An electromagnetic wave Safe A helium nucleus An electron

iris [78.8K]

Answer:

A. Gamma radiation is an electromagnetic wave.

Explanation:

" Gamma ray is an electromagnetic radiation from a nucleus. It is not safe.

" Nucleus of a helium atom is called Alpha particle.

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2 years ago

What energy transformation takes place in the solar panel?

aliina [53]

I think it’s the first option

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2 years ago

A 7 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. The ki

Marizza181 [45]

Answer:

Explanation:

Given

mass of object $m=7 kg$

kinetic Energy $k=36\ J$

Tension in string $T=326\ N$

mass is moving in a horizontal circle so tension is providing the centripetal acceleration

therefore $T=\frac{mv^2}{r}----1$

where r=radius of circle

kinetic energy of particle $k=\frac{1}{2}mv^2----2$

divide 1 and 2 we get

$\frac{T}{k}=\frac{\frac{mv^2}{r}}{\frac{1}{2}mv^2}$

$\frac{T}{k}=\frac{2}{r}$

$r=\frac{2k}{T}=\frac{2\times 36}{326}$

$r=0.2208\ m$

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2 years ago

State the state the first law of motion

SCORPION-xisa [38]

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
I hope this helps you

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3 years ago

An object has a mass of 785 g and a volume of 15 cm³. What is its density? (Give your answer in g/cm³ to 2 decimal places).

Anvisha [2.4K]

Answer:

denisity = 52.33 g/c $m^{3}$

Explanation:

Density:

$d = \frac{m}{v}$

We have that m = 785 and that v = 15 c $m^{3}$ .

$d = \frac{785}{15}$

d = 52.33 $m^{3}$

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2 years ago