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BaLLatris [955]
4 years ago
10

Which of the following best describes acceleration

Physics
1 answer:
Katena32 [7]4 years ago
3 0
D. acceleration is the rate of change of velocity of an object.
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The passage of a wave through a medium is...?
podryga [215]

Answer:

Transmission

Explanation:

It’s the passage of electromagnetic waves through a medium.

5 0
3 years ago
A 1400 kg car drives up a 16 m high hill. The car’s speeds at the bottom and top are 21 m/s and 13 m/s, respectively. If the car
Roman55 [17]

Answer:

Explanation:

mass, m = 1400 kg

height, h = 16 m

initial velocity, u = 21 m/s

final velocity, v = 13 m/s

Work done by engine, We = 80 kJ

Let the work done by the friction force is Wf.

Use the work energy theorem

net work done = change in kinetic energy

work done by engine + work done by friction force + work done by the gravitational force = Change in kinetic energy

80000 + Wf - m x g x h = 0.5 m ( v² - u²)

80000 + Wf - 1400 x 9.8 x 16 = 0.5 x 1400 x ( 169 - 441 )

- 139520 + Wf = - 190400

Wf = 50880 J

4 0
3 years ago
What would it take to changes an object’s orbit about another object in space?
Anarel [89]

Answer:

Orbits are the result of a perfect balance between the forward motion of a body in space, such as a planet or moon, and the pull of gravity on it from another body in space, such as a large planet or star

5 0
2 years ago
Consider this system at equilibrium.
alexandr402 [8]
The given reaction is an exothermic reaction due to the negative amount of enthalpy. In this case, an increase in temperature favors the backward reaction which points to the creation of more products. The expression of K or Q is products over reactants concentration. When this happens, Q becomes smaller then. Hence answer is C and 1.
4 0
3 years ago
Railroad tracks appear to converge in the distance. This provides a cue for depth perception known as _____. Please type the cor
evablogger [386]

Answer:

linear perspective

Explanation:

Railroad tracks appear to converge due to our field of view. When an object is far away it seems smaller that means there is angle that subtends from our line of sight this results in the illusion of railroad tracks converging.

Railroad tracks converging activates the linear perspective of our vision. Linear perspective is a technique used to convey a sense of depth in two dimensional representation of an object. The lines at an angle give us a sense of depth otherwise straight lines will not be able to convey depth.

6 0
3 years ago
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