3 years ago

1. How much work is done on a 20-N rock that you lift 1.5 meters up?

Physics

1 answer:

Tcecarenko [31]3 years ago

3 0

The answer will be B

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mestny [16]

Answer: I am so sorry, but i cannot answer this for you,i hope someone does though cause if i known Spanish i could have but i don't.

Explanation:

I hope you find someone that can help you answer this and i hope you have a Great Day! =)

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3 years ago

How much tension must a cable withstand to accellerate a 1400 kg car vertically upward at 0.70 m/s^2

MariettaO [177]

Answer:

Below

Explanation:

The cars upward accel adds to the gravity accel (think about how suddenly heavy you feel when the elevator starts to move upward)

F = tension = ma

= 1400 * ( .7 + 9.81) = 14714 N

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2 years ago

Which best illustrates the gravitational force in action?

Hitman42 [59]

Answer:

A picture of a baseball being thrown tworad a batter at home plate.

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4 years ago

The _____ of an object consists of its speed and direction.

ELEN [110]

Velocity would be an answer

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3 years ago

A laser beam of unknown wavelength passes through adiffraction grating having 5510 lines/cm after striking itperpendicularly. Ta

Ivahew [28]

Answer:

Explanation:

distance between two slit d = $\frac{1 \times 10^{-2}}{5510}$

d = 18.15 x 10⁻⁷ m

Let wave length of light λ

formula for position of first pair of bright spot

Tanθ = λ / d , λ is wave length of light and d is distance between two slit .

Tan 15.4 = $\frac{\lambda}{18.15\times10^{-7}}$

λ = Tan 15.4 x 18.15 x 10⁻⁷

=5 x 10⁻⁷ m

If θ be the position of next bright spot

Tanθ = 2 λ / d

= $\frac{2 \times\ 5\times\ 10^ {-7}}{18.15\times10^{-7}}$

= $\frac{2\times5}{18.5}$

θ = 28.4 degree .

7 0

3 years ago