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balandron [24]
3 years ago
12

When you cut a board with a power saw as compared with a handsaw, how much work do you do with the power saw?

Physics
2 answers:
Bezzdna [24]3 years ago
8 0
A) less work in less time
oee [108]3 years ago
7 0
I believe the answer is A) Less work in less time. 
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2. Interpret Graphs How does temperature change with depth in Earth's<br> mantle?
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The Earth gets hotter as one travels towards the core, known as the geothermal gradient. The geothermal gradient is the amount that the Earth's temperature increases with depth. ... On average, the temperature increases by about 25°C for every kilometer of depth.
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2 years ago
A basketball player is 4.22 m from
max2010maxim [7]

Answer: The height above the release point is 2.96 meters.

Explanation:

The acceleration of the ball is the gravitational acceleration in the y axis.

A = (0, -9.8m/s^)

For the velocity we can integrate over time and get:

V(t) = (9.20m/s*cos(69°), -9.8m/s^2*t + 9.20m/s^2*sin(69°))

for the position we can integrate it again over time, but this time we do not have any integration constant because the initial position of the ball will be (0,0)

P(t) = (9.20*cos(69°)*t, -4.9m/s^2*t^2 + 9.20m/s^2*sin(69°)*t)

now, the time at wich the horizontal displacement is 4.22 m will be:

4.22m = 9.20*cos(69°)*t

t = (4.22/ 9.20*cos(69°)) = 1.28s

Now we evaluate the y-position in this time:

h =  -4.9m/s^2*(1.28s)^2 + 9.20m/s^2*sin(69°)*1.28s = 2.96m

The height above the release point is 2.96 meters.

3 0
3 years ago
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When the distance increases, the electrostatic force____; we call this relationship proportional
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Answer:

I think decreases inversely

Explanation:

the third

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2 years ago
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What force is required to accelerate a body with a mass of 15kilograms at a rate of
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The force required is

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4 0
3 years ago
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