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drek231 [11]
2 years ago
7

If an object weighs 80 Newtons, what force must be applied to the rope to raise the object when the mechanical advantage is four

?
Which formula would you use to solve this problem?
Physics
1 answer:
AnnyKZ [126]2 years ago
5 0
80 -4f(45.56 - 56) solve and get answer
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Of the more than 2,000 known minerals approximately 95% of them belong to what mineral group?
Temka [501]
Your answer is Silicates.
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3 years ago
"If you double the wavelength of a wave on a particular string", what happens to the wave speed v and the frequency f ? (i) v do
nadezda [96]

Answer:

v doubles and f is unchanged

Explanation:

According to the formula v = f¶

Where v is the velocity of the wave

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Velocity is directly proportional to wavelength. Direct proportionality shows that increase in velocity will cause an increase in the wavelength and decrease in velocity will also cause a decrease in wavelength with the frequency not changing since the velocity and wavelength are both increasing and decreasing at the same rate.

According to the question, if the wavelength is doubled, the velocity (v) will also double while the frequency (f) remains unchanged.

5 0
3 years ago
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If an object doubles in mass, what happens to its inertia?
son4ous [18]

Inertia is proportional to mass. It is a measure of the resistance to changes in velocity. Inertia is a property of mass and cannot change. Momentum changes as an object changes its velocity.


HENCE The inertia will also be doubled

5 0
3 years ago
A car was at a 30km marker and began to drive. The car passed a 90km marker and the time had changed 30
dolphi86 [110]

Answer:

i think it's 2km pm

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7 0
2 years ago
What measures air pressure.?
Alekssandra [29.7K]
That depends on what type of pressure you are attempting to measure, to measure Atmospheric pressure, you would use a Barometer. To measure things like tires, you could use a Tire Pressure Gauge. For Industrial processes and boilers, you would use a Manometer. For pressure vessels, you would use a Bordon Gauge.   <span />
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3 years ago
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