3 years ago

Russ makes the diagram below to organize his notes about how Newton's first law describes objects at equilibrium.

Physics

1 answer:

Naddika [18.5K]3 years ago

6 0

Answer:

All objects resist their stage of motion. unless an unbalanced force as long as the forces are unbalanced

Explanation:

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What is thermal energy defined as

vovangra [49]

Answer:

hermal energy is the energy that is generated and measured by heat.

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ou are unloading a refrigerator from a delivery van. The ramp on the van is 5.0 m long, and its top end is 1.4 m above the groun

tigry1 [53]

Answer:

Explanation:

component of force along the ramp

= 370 cos θ where θ is the slope of the ramp with respect to ground.

sinθ = 1.4 / 5

θ = 16 degree

370 cos16

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Work done

= component of force along the ramp x length of the ramp

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3 years ago

An elevator ascends at a constant speed of 4 m/s, how much time is required for the elevator in order to travel 120 m upwards?

vlabodo [156]

We simply use the formula,

$velocity =\frac{distance}{time}$

Given, velocity = 4 m per s and distance = 120 m.

Substituting these values, we get

$4\ m/s =\frac{120\ m}{time}\\\\\ time=\frac{120\ m}{4\ m/s} = 30\ s$ .

Thus, required time for the elevator in order to travel 120 m upwards is 30 s.

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3 years ago

If vector C is added to vector D, the result is a third vector that is perpendicular to D and has a magnitude equal to 3D. What

Jet001 [13]

Answer:

(e) 3.2

Explanation:

We are given that vector C and D.

Let R be the magnitude of C+D.

According to question

R=3D

We have to find the ratio of the magnitude of C to that of D.

By using right triangle property

$C^2=R^2+D^2$

$C^2=(3D)^2+D^2$

$C^2=9D^2+D^2$

$C^2=10D^2$

$C=\sqrt{10D^2}=3.2D$

$\frac{C}{D}=3.2$

Hence, the ratio of the magnitude of C to that of D=3.2

(e) 3.2

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3 years ago

A bungee cord with a spring constant of 800 StartFraction N over m EndFraction stretches 6 meters at its greatest displacement.

zalisa [80]

Explanation:

EE = ½ kx²

EE = ½ (800 N/m) (6 m)²

EE = 14,400 J

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