A machine has a mechanical advantage of 5. if 300 newtons of input force is used to produce 3,000 newton meters of work what is the output force and what is the distance over which the work is applied
Answers
F(in) x d(in)= F(out)x d(out) A machine has a mechanical advantage of 5. F(out )= 5xF(in)300 newtons
F(in) = 300 N F(out)= 5xF(in) = 5x300 N = 1500 N
Work in = Work out = 3000 N x m3000 N x m = F_in x d_ind_in = 3000 Nxm / F_in = 3000 N x m / 300 N = 10 m3000 Nxm = F_out x d_out d_out = 3000 Nx m / F_out = 3000 N x m / 1500 N = 2 m
Answer:
D. 3600 N
Explanation:
On edg.
Which star is closest to our solar system (after the sun)? a. Vega b. Sirius c. Regulus d. Proxima Centauri
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Answer:
d. Proxima Centauri
Explanation:
The star closest to our solar system(after the sun) is Proxima Centauri
A ray of light is travelling from north towards south and it has travelled 49 km until it hit a mirror which reflected the light towards east. The ray of light reflected towards east has travelled 47 km until it hit another mirror which reflected it diagonally towards the initial point which is north. How long is the line reflected towards north diagonally? Round the result to two decimals.
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The path is a right triangle. One side of this triangleis 49 km long, the other side is 47 km long.
The hypotenuse is the the diagonal line searched.
So use Pythagora's theorem to find the diagonal line:
Diagonal = √[(47km)^2 + (49km)^2] = 67.90km
An observer notes that the pitch of a sound is becoming progressively lower. The observer can conclude that the sound is moving
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He can conclude that the source of the sound is moving away from him and that its speed is increasing.
The source of the sound is moving away from the receiver.
The main reason ice blocks became unpopular for cooling food was
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The source of the ice was unsanitary
Answer:
The source of ice was unsanitary :>
Explanation:
Which of the following condition would decrease the ability of a person to hear a sound?
Answers
These are some conditions that can possibly decrease the ability of person to hear a sound: 1. Blockage of the ear canal - ear wax is naturally produced by our ear canal which serves as self- protection. It also block sounds if the ear canal is not well cleaned. 2. Foreign bodies in the ear canal - foreign bodies such as beads, left residue of cotton, peas or even small insects like bugs, bees, and spiders. 3. Infected Eardrum - eardrum catches sound waves that passes through the ear canal. If the eardrum is damage, it may lessen its ability to catch sound effectively.