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2 years ago

A force of 1000 newtons was necessary to lift a rock. A total of 3000 joules of work was done. How far was the rock lifted?

Physics

1 answer:

zhenek [66]2 years ago

8 0

Answer: 3 meters

Explanation:

If you were to use a 3 line answer then it would look like this:

d = W/F

d = 3000/1000

d = 3 meters

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After a collision between two different massed objects; the larger objects accelerate at a faster rate than the smaller object?

Nitella [24]

Answer: Things continue doing what they are doing unless a force is applied to it. Objects have a natural tendency to resist change. This is INERTIA. Heavier objects (objects with more mass) are more difficult to move and stop. Heavier objects (greater mass) resist change more than lighter objects, so true

Explanation:

Pushing a bicycle or a Cadillac, or stopping them once moving. The more massive the object (more inertia) the harder it is to start or stop. The Cadillac has more of a tendency to stay stationary (or continue moving), and resist a change in motion than a bicycle.

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3 years ago

Question 3 of 10

Mazyrski [523]

Answer:

B . energy cannot be created or destroyed

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3 years ago

Một người đi đều với vận tốc 1,5 m/s, muốn đi quãng đường dài 1,5 km thì người

andrezito [222]

T=s/v=>t=1500/1,5=1000s
1,5km=1500m

6 0

3 years ago

You drop a stone into a deep well and hear it hit the bottom 6.65 s later. This is the time it takes for the stone to fall to th

baherus [9]

Answer: ok, so total time is Tt = 6.65 seconds = time falling + time of sound traveling.

the time of the rock falling is given by: $(g/2)*t₀^{2} -h = 0$ (1)

where h is the heigth of the hole, and t₀ is the time it took to reach the bottom.

the time of the sound traveling is given by 343*t₁ - h = 0 (2)

so t₁ + t₀ = 6.65s = total time

then you know that t₁ = 6.65s - t₀

so now you have two variables, t₀ and h, and we want to know the value of h, so we want to write t₀ as a function of h.

in the second equation we have now: 343*(6.65 - t₀) = h

so t₀ = (-h/343 + 6.65)s

replacing this on the first equation you have:

$(g/2)*(-h/343 + 6.65)^{2} -h = 0$

now you want to take h to the right side so

so if we replace g by 9.8 meters over seconds square we get

h = $\frac{-1.19 -+ \sqrt[2]{1.56} }{2*0.00041}$

where you will take the positive root

h = 61 meters

3 0

4 years ago

If you have a mixture that contains the solid benzoic acid mixed with a volatile alkyl halide liquid. what is the most efficient

Goryan [66]

Fractional distillation is the most efficient technique to separate solid benzoic acid mixed with a volatile alkyl halide liquid components.

<h3>Fractional distillation :</h3>

Separating a mixture into its constituent parts, or fractions, is known as fractional distillation. Chemical compounds are separated by heating chemical mixtures to a temperature at which one or more fractions of the mixture evaporate. Distillation is used to fractionate.

Boiling a mixture of liquids results in vapors rising up a glass tube known as a "fractionating column," which is followed by separation. The fractionating column, which is placed between the flask holding the mixture and the "Y" adaptor, improves the separation of the liquids being distilled.

<h3>Uses of fractional distillation :</h3>

Alcohol purification, desalination, crude oil refinement, and the creation of liquefied gases from air are all applications of distillation.

To know more about purification visit :

brainly.com/question/3130146

#SPJ4

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2 years ago