3 years ago

Which statement is true about the difference between calcium carbonate and calcium oxide?

Physics

1 answer:

Kay [80]3 years ago

7 0

Kalsium Karbonat is true

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What happens to Earth’s axis of rotation as Earth orbits the Sun?

Dominik [7]

Stays lined up with North Star

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4 years ago

A person uses a constant force to push a 14.0 kg crate 1.80 m up a frictionless 10⁰ incline and to also increase its speed from

zubka84 [21]

a) Making h as the shorter cathetus, we have,

$h=1.8*sin10=0.312$

We proceed to calculate the work done by gravity

$W_g=-mgh$

$W_g=-140*0.312=-43.76J$

b) It's necessary to calculate the Kinetic Energy, we use the equation of KE,

$\Delta KE = \frac{1}{2}m(v_2^2-v_1^2)$

$\Delta KE = \frac{1}{2}14(1.5^2-0.5^2)=14J$

c) By work energy theorem

$W_{net}=\Delta KE \rightarrow W_net = 14J$

d) we calculate net work through the law of conservation

$W_{net}=W_f+W_g=14$

$\rightarrow W_f = 14-W_g=14-(-43.76)$

$W_f=57.76J$

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3 years ago

Why isnt it a saftey issue when to connect a short wire with a light in the circuit? (2 reasons)

iVinArrow [24]

Answer:

because you can get very electrocuted and you could get a disease I never put your hand add water on and touching water cuz you can get your hand electrocuted

Explanation:

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3 years ago

When is your kinetic energy the least when swinging on a park swing?

Afina-wow [57]

Answer:

An active pendulum has the most kinetic energy at the lowest point of its swing when the weight is moving fastest.

Explanation:

SO YOU HAVE THE LEAST KINETIC ENERGY AT THE HIGHEST POINT OF THE SWING WHEN IT'S NOT ACTIVE

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3 years ago

A force of 8 N is used to drag a chair 2.5 metres across a room. Calculate the work done to move the chair.

NNADVOKAT [17]

Answer:

Explanation:

GIVEN

Force (F) = 8 N

Distance (d) = 2.5 metres

Work done = ?

WE know we have the formula

work done = F * d

Work done = 8 * 2.5

= 20 Joule

Hope it helps :)

8 0

4 years ago

Read 2 more answers