Why a paperclip does NOT float?

2 answers:

4 0

Answer: the tention of the water since the object is light the water particles can rise it so it's not entilely floating

Explanation: flat line:_____________________________

Nataliya [291]2 years ago

3 0

Because of Surface tension

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A ball dropped from a height of 50 meters, Determine the speed of the ball after 3 seconds

Alex17521 [72]

16.7 m/s

To determine the speed we use the formula: Distance ÷ Time so, 50 ÷ 3 = 16.66... ( rounded off to 1.d.p is 16.7).

8 0

4 years ago

In the absence of air resistance two balls are thrown upward from the same launch point. Ball a rises to a maximum height above

diamong [38]

Answer:

Va is two times greater than Vb

Explanation:

The maximum height reached by the balls are:

$Ymax = \frac{Vo^2}{2g}$

Since we are told that Ya = 4Yb:

$Ya = \frac{Va^2}{2g} = 4* Yb = 4 * \frac{Vb^2}{2g}$

Simplifying the equation:

$Va^2 = 4*Vb^2$

$Va = 2*Vb$

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3 years ago

Find the mass by adding the numbers from the three sliders

shtirl [24]

add the numbers from the three sliders to determine that mass of an object

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3 years ago

A machine exerts a 100 N force to the right over a 5.00 meter length in 4.00 seconds. Calculate the power output of this machine

bixtya [17]

125 W is the power output of this machine.

Answer:

Explanation:

Power is defined as the amount of work done on the system to move that system from its original state within the given time interval. So it can be determined by the ratio of work done with time interval. As work done is the measure of force required to move a system to a certain distance. Work done is calculated as product of force with displacement.

So in the present case, the force is given as 100 N, the displacement is given as 5 m and the time is given as 4 s, then power is

$Power = \frac{Work done}{Time}$