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GREYUIT [131]
3 years ago
6

The density of aluminium at 0°C is 2.70×10³kg/me.what is the density at 300°C

Physics
1 answer:
zhannawk [14.2K]3 years ago
4 0
27.0 grams

The density<span> of a substance tells you the mass of exactly </span>one unit of volume<span> of said substance.
</span>
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A 0.12 kg bird is flying at a constant speed of 7.8 m/s. what is the birds conetic energy?
lana [24]
KE=1/2mv^2 - equation for kinetic energy
KE=(1/2)(0.12 kg)((7.8 m/s)^2 - plug it into the formula
KE=(0.06 kg)(60.84 m/s) - multiply 1/2 to the mass and square the speed
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Hope this helps
7 0
3 years ago
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When heating food, why do you think the oven gets hot to the touch while the microwave does not?
LenKa [72]

Answer:

The oven has many different heat sources from the bottom, sides, top, etc...

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4 0
2 years ago
A 120-kg object and a 420-kg object are separated by 3.00 m At what position (other than an infinitely remote one) can the 51.0-
djverab [1.8K]

Answer:

1.045 m from 120 kg

Explanation:

m1 = 120 kg

m2 = 420 kg

m = 51 kg

d = 3 m

Let m is placed at a distance y from 120 kg so that the net force on 51 kg is zero.

By use of the gravitational force

Force on m due to m1 is equal to the force on m due to m2.

\frac{Gm_{1}m}{y^{2}}=\frac{Gm_{2}m}{\left ( d-y \right )^{2}}

\frac{m_{1}}{y^{2}}=\frac{m_{2}}{\left ( d-y \right )^{2}}

\frac{3-y}{y}=\sqrt{\frac{7}{2}}

3 - y = 1.87 y

3 = 2.87 y

y = 1.045 m

Thus, the net force on 51 kg is zero if it is placed at a distance of 1.045 m from 120 kg.

6 0
3 years ago
Bagaimana cara untuk melatih kemampuan melempar tangkap yang baik dalam bola basket​
anyanavicka [17]

Answer:

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2 years ago
Which one of the following statements about sulfuric acid is correct?
kherson [118]
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This chemical also suck the water out of everything, so you can guess what will happen if it get into your body.


6 0
2 years ago
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