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Lostsunrise [7]
3 years ago
13

Please help me with this! i will give brainliest if you get it right! NO LINKS OR IM REPORTING

Physics
1 answer:
Soloha48 [4]3 years ago
6 0
Number 7 is no motion
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A 50-kg meteorite moving at 1000 m/s strikes Earth. Assume the velocity is along the line joining Earth's center of mass and the
wel

Answer:

a)  amount of kinetic energy converted to internal energy  = 2.5 x 10 raised to power 7 Joule

b) Kinetic energy gained by the earth = 2.1 x 10-16J

c) All the kinetic energy is converted to internal energy and the energy is further converted to thermal energy hence the reason for the hotness at around where the meteorite strikes.

Explanation:

The detailed steps and appropriate application of the law of conservation of momentum is as shown in the attached file.

3 0
4 years ago
Two creatures sit on a horizontal frictional rotating platform. The platform rotates at a constant speed. The creatures do not s
ddd [48]

Answer:

M v^2 / R = centripetal force

For Red: M v^2 / R = 5 * 9^2 / 1.5 = 270

For Blue M v^2 / R = 270 = 25 * 1.8^2 / Rb

So Rb = 25 * 1.8^2 / 270 = .3 m

6 0
3 years ago
A loop of wire carrying a current of 2.0 A is in the shape of a right triangle with two equal sides, each 15 cm long. A 0.7 T un
LiRa [457]

Answer:

The total magnetic force is 0.297 N.

Explanation:

Given that,

Current = 2.0 A

Length of each side = 15 cm

Magnetic field = 0.7 T

A loop of wire is in the shape of a right triangle with two equal sides.

The angle between the magnetic field and both the sides of the triangle is 45 degrees.

We need to calculate the total magnetic force

Using formula of magnetic force

F=2BIl\sin\theta

Where, B = magnetic field

I = current

L- length

Put the value into the formula

F=2\times0.7\times2.0\times15\times10^{-2}\sin45

F=0.297\ N

Hence, The total magnetic force is 0.297 N.

7 0
4 years ago
What is the mass, in grams, of a pure iron cube that has a volume of 3.70cm cubed?
Arlecino [84]
To determine the amount in grams of the iron, we need data on the density of iron. From literature, it has a value of <span>p=7.9 g/cm3. We simply multiply the volume to the density. We do as follows:

mass = 3.70 (7.9) = 29.23 g Fe

Hope this answers the question. Have a nice day.</span>
7 0
4 years ago
The pressure due to the atmosphere is very large, why are we not crushed?
lyudmila [28]

Answer:

It is because of the blood pressure balances with our atmospheric pressure

4 0
2 years ago
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