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How much heat is required to heat the temperature of 338g of aluminum by?

1 answer:

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Specific heat is another physical property of matter. ... we con now ask the following question: by how much will the temperature of an .

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A new planet is discovered that has twice the Earth's mass and twice the Earth's radius. On the surface of this new planet a per

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Answer:

option B

Explanation:

Radius of new planet,R' = 2R

Mass of the earth, M' = 2 M

R and M is the Radius and Mass of the earth.

Weight of the person on earth = 500 N

Weight of the person in the new planet = ?

We know acceleration due to gravity is calculated by using formula

$g = \dfrac{GM}{R^2}$

now, acceleration due to gravity on the new planet

$g' = \dfrac{GM'}{R'^2}$

$g' = \dfrac{G(2M)}{(2R)^2}$

$g' =\dfrac{1}{2} \dfrac{GM}{R^2}$

$g' =\dfrac{g}{2}$

here acceleration due to gravity is half in new planet, so weight will also be half on the new planet.

Weight on the new plane is equal to $\dfrac{500}{2}$ = 250 N

correct answer is option B

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HELP ASAP CORRECT ANSWER ONLY 10 PTS Collaboration, listening, and negotiating are considered __________ skills. interpersonal m

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Answer:

Explanation:

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A yoyo is hanging motionless from a string. Identify and describe the forces exerted on the string.

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Potential and kinetic energy along with an external force

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A 1500kg car is at rest before it accelerates when the light turns green. If it covers 45.0 meters in 15.0 seconds, what is the

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Answer:

300N

Explanation:

Given parameters:

Mass of car = 1500kg

Initial velocity = 0m/s

Distance covered = 45m

Time = 15s

Unknown:

Net force applied = ?

Solution:

From Newton's second law:

Force = mass x acceleration

Force = mass x $\frac{v - u}{t}$

v is the final velocity

u is the initial velocity

t is the time taken

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Force = 1500 x $\frac{3 - 0}{15}$ = 300N

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3 years ago

What is the classification of the reaction shown in the equation below?

ad-work [718]

Answer:

Explanation:

because is a reducing agent, O 2 is an oxidizing agent.

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