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3 years ago

Car jack is machine helps people do work by?

Physics

2 answers:

saul85 [17]3 years ago

8 0

Answer:

d. changing the direction if force

kindly follow.tnx

Temka [501]3 years ago

7 0

Answer: Your answer for this question would be letter D if this is wrong let me know ok have a great day and keep the good work up.

Explanation:

You might be interested in

What is the structure located inside the nucleus of a cell that contains an organism’s genetic code?

schepotkina [342]

This belongs in the bio section but the structure are the chromosomes that contain the DNA strands themselves containing the genetic information of any living things

5 0

3 years ago

Assuming the average rate of heat energy flowing outwards from earth to be 0.063 W/m2 calculate the energy available at a hot sp

MaRussiya [10]

Answer:

"13.48 Kwhr" is the right solution.

Explanation:

The given values are:

Average rate of heat energy,

= 0.063 W/m²

Diameter,

= 8m

Efficiency of conversion,

= 50%

Now,

The area of hotspot will be:

⇒ $A=\frac{\pi}{4} d^2$

On substituting the values, we get

⇒ $=\frac{3.14}{4} (8)^2$

⇒ $=0.785\times 64$

⇒ $=50.24 \ m^2$

Total heat generation rate will be:

⇒ $Q=q\times A$

$=0.063\times 50.24$

$=3.16 \ W$

hence,

The electricity generation capacity will be:

⇒ $P=\eta Q t$

On substituting the values, we get

⇒ $=0.5\times 3.16\times 8760$

⇒ $=13840.8 \ Whr$

On converting into Kwhr, we get

⇒ $=13.84 \ Kwhr$

6 0

3 years ago

Is it possible for a baseball to have as large a momentum as a much more massive bowling ball

kirza4 [7]

Yes it is possible. Momentum is calculated by the mass of the object times its velocity.
For example, say a bowling ball weighs 3.0kg and is travelling at a speed of 3.0m/s. Its momentum would be 3.0×3.0=9.0 kg·m/s.
Now say we have a baseball weighing 0.20kg and it is travelling at a speed of 47.0m/s. Its momentum would be 0.20×47.0=9.4 kg·m/s, which is more than that of the bowling ball.

8 0

3 years ago

Monochromatic light is incident on two slits separated by 0,2 mm. An interference pattern is observed on a screen 3,7 m away. Th

zalisa [80]

Answer:

λ = 864 nm

Explanation:

To find the wavelength of the light you use the following formula, which determines the position of the m-th fringe in an interference pattern:

$y_m=\frac{m\lambda D}{d}$ (1)

ym: position of a bright fringe

D: distance from the slits to the screen = 3,7 m

d: distance between slits = 0,2mm = 0,2 *10^-3 m

m: order of the fringe

λ: wavelength of the light

You have the distance from the central peak to the third fringe (0,048m). Then, you can use the equation (1) with m=3 and solve for the wavelength:

$y_3=\frac{3\lambda D}{d}\\\\\lambda=\frac{dy_3}{3D}=\frac{(0,2*10^{-3}m)(0,048m)}{3(3,7m)}=8,64*10^{-7}m\\\\\lambda=864*10^{-9}m=864nm$

henc, the wavelength of the light is 864nm

5 0

3 years ago

Need thy help once again

Thepotemich [5.8K]

B cause I took the quiz

8 0

3 years ago