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viktelen [127]
3 years ago
5

1) Manipulate is to measure as

Physics
1 answer:
ValentinkaMS [17]3 years ago
3 0

Answer: The variable that you manipulate is called the independent variable. The variable that you measure is called the dependent variable.

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A box is at rest on a table. What can you say about the forces acting on the box?
Nikitich [7]
You can tell a lot about an object that's not moving,
and also a lot about the forces acting on it:

==> If the box is at rest on the table, then it is not accelerating.

==> Since it is not accelerating, I can say that the forces on it are balanced.

==> That means that the sum of all forces acting on the box is zero,
and the effect of all the forces acting on it is the same as if there were
no forces acting on it at all.

==> This in turn means that all of the horizontal forces are balanced,
AND all of the vertical forces are balanced.

Horizontal forces:
sliding friction, somebody pushing the box

All of the forces on this list must add up to zero. So ...

(sliding friction force) = (pushing force), in the opposite direction.

If nobody pushing the box, then sliding friction force = zero.

Vertical forces:
gravitational force (weight of the box, pulling it down)
normal force (table pushing the box up)

All of the forces on this list must add up to zero, so ...

(Gravitational force down) + (normal force up) = zero

(Gravitational force down) = -(normal force up) .
6 0
3 years ago
Read 2 more answers
The elastic energy stored in your tendons can contribute up to 35% of your energy needs when running. Sports scientists have stu
Anni [7]

Answer:

ΔE = 9.7mJ

Explanation:

See attachment below.

7 0
3 years ago
Why are collisions between galaxies more likely than collisions between stars within a galaxy?
KatRina [158]

Answer:

stars share a gravitational force with the galaxy while nearby galaxies do not share a gravitational field.

Explanation:

stars will not collide because they are bound by a gravitational orbit around the galaxy

8 0
3 years ago
What is a fault?
Free_Kalibri [48]
C) A crack in earth's crust where movement occurs. An example of this is the San Andreas Fault.

A) is repulsion
B) continental crust (lighter crust)
D) Hotspot
3 0
3 years ago
A woman does 236 J of work
mamaluj [8]

Answer:

Explanation:

Step one:

Given data

work-done in dragging the trash= 236J

applied force= 18.9N

distance moved= 24.4m

Required

The angle of the applied force

Step two:

We know that work done is

WD= F * distance

<em>The work is the product of the horizontal component of the force and the distance. </em>

Horizontal force = 236 ÷ 24.4

= 9.67 N

Cos θ = Horizontal force ÷ Actual force

Cos θ = (236 ÷ 24.4) ÷ 18.9 = 236 ÷ 461.16

The angle is approximately 59˚

6 0
3 years ago
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