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fgiga [73]
3 years ago
6

A baseball player uses a pitching machine to help him improve his batting average. he places the 54.6 kg machine on a frozen pon

d. the machine fires a 0.149 kg baseball horizontally at a speed of 42.6 m/s. what is the magnitude of the recoil velocity of the machine? answer in units of m/s.
Physics
1 answer:
Mila [183]3 years ago
3 0
   0.029 m/s                                               ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
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In which direction are the winds blowing in the northern and southern hemispheres
Alika [10]

The winds normally blow from east to the west rather than blowing from the north to the south in the northern and the southern hemispheres.

<u>Explanation:</u>

The reason for the blowing of the wind from the east to the west rather than from the north to the south in both the hemispheres which are the northern and the southern hemispheres are because it happens in light of the fact that Earth's rotation around it's own axis creates what is known as the Coriolis effect.

The Coriolis impact makes wind frameworks turn counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.

6 0
3 years ago
A food refrigerator is to provide a 15,000 kj/h cooling effect while rejecting 22,000 kj/h of heat. calculate the cop of this re
svp [43]
Coefficient of performance or more commonly known as COP is calculated through the equation,
                                 COP = ((T₂)/(T₂ - T₁)) 
where T₂ is the hot temperature and T₁ is the cold temperature. Similarly, these can also be,
                      COP = heat ejected / (heat ejected - heat provided)
 Substituting,
                     COP = 22,000 / (22,000 - 15,000) = 3.14
Thus, the value of the COP is approximately 3.14. 
6 0
3 years ago
Consider the reaction X mc022-1.jpg Y + 2Z . If the molar solubility of X is multiplied by 2, the value of Ksp will be multiplie
Alex777 [14]
X -> Y + 2Z

So there are 2 different particles. 1 mol of X produces 1 mol of Y and 2 moles of Z.

Kps = [Y] [Z]^2

We will call “s” (solubility) the molarity of X

So the molarity of Y+ is also “s” (same number)

And the molarity of Z is “2s” (twice as much)

Kps = s*(2s)^2 = s*4s^2=4s^3

If s is multiplied by 2:

Kps = 4*(2s)^3=4*2^3*s^3=4*8*s^3

So Kps is multiplied by 8.

4 0
4 years ago
Bismuth-210 has a half-life of 5 days. If you
Anton [14]

Answer:

A = 62.5 g

using half life formulas, plug in missing variables.

6 0
4 years ago
Calculate the pressure exerted on a surface by a brick of weight 10 N. The area in contact with the surface is 20 cm2
anzhelika [568]

Answer:

Explanation:

Force of brick = 10 N

Area of surface = 20 cm^2

Pressure = force / area

∴ Pressure = 10 / 20

= 1 / 2 or 0.5 Pa

Hope this hepls

plz mark it as brainliest!!!!!!!!

7 0
3 years ago
Read 2 more answers
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