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Vadim26 [7]
2 years ago
11

What quantity measures the number of complete cycles oscillation makes per second?

Physics
2 answers:
kirza4 [7]2 years ago
3 0
The answer is (C) Frequency
pentagon [3]2 years ago
3 0

Answer:c. Frequency

Explanation:By definition frequency is the number of cycles per second, or the number of oscillations per second, measured in Hertz (Hz), then 1 Hz means one cycle or oscillation in one second, 10 Hz means 10 cycles in one second and so on. Also for motors specially is used rpm that stands for revolutions per minute. You could transform Hz into rpm if needed, but for waves, e.g., sound, electricity, etc. is used generally Hertz

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Automobiles must be able to sustain a frontal impacl The automobile design must allow low speed impacts with little sustained da
valentinak56 [21]

Answer: the effective design stiffness required to limit the bumper maximum deflection during impact to 4 cm is 3906250 N/m

Explanation:

Given that;

mass of vehicle m = 1000 kg

for a low speed test; V = 2.5 m/s

bumper maximum deflection = 4 cm = 0.04 m

First we determine the energy of the vehicle just prior to impact;

W_v = 1/2mv²

we substitute

W_v = 1/2 × 1000 × (2.5)²

W_v = 3125 J

now, the the effective design stiffness k will be:

at the impact point, energy of the vehicle converts to elastic potential energy of the bumper;

hence;

W_v = 1/2kx²

we substitute

3125 = 1/2 × k (0.04)²

3125 = 0.0008k

k = 3125 / 0.0008

k = 3906250 N/m

Therefore, the effective design stiffness required to limit the bumper maximum deflection during impact to 4 cm is 3906250 N/m

3 0
2 years ago
A car of mass 1167 kg accelerates on a flat highway from 10 m/s to 28.0 m/s. How much work does the car's engine do on the car?
denis23 [38]

Answer:

Workdone = 465766038 Joules.

Explanation:

<u>Given the following data;</u>

Mass = 1167

Initial velocity = 10m/s

Final velocity =28m/s

To find the workdone;

We know that from the workdone theorem, the workdone by an object or a body is directly proportional to the kinetic energy possessed by the object due to its motion.

Mathematically, it is given by the equation;

W = Kf - Ki

W = ½MVf² - ½MVi²

Substituting into the equation

W = ½(1167)*28² - ½(1167)*10²

W = ½ * 1361889* 784 - ½ * 1361889 * 100

W = 533860488 - 68094450

Workdone = 465766038 Joules.

7 0
2 years ago
The food chain in question 1 is; Grass -&gt; Deer -&gt; Wolf
aleksklad [387]
Grass dear wolf is the right awnser
6 0
2 years ago
There are two parts, answer both, please dont just say part 1 is the correct answer
nordsb [41]

Answer:

Im not sure

Explanation:

4 0
3 years ago
Read 2 more answers
Is this statement true or false?
RSB [31]

Answer:

Places at the same latitude may have very different climates if one is on a coast and one is inland. On the coast, the climate is influenced by warm moist air from the ocean. A coastal climate is usually mild. ... Farther inland, the climate is influenced by cold or hot air from the land.

Explanation:

Hopefully its correct!

8 0
2 years ago
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