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Olenka [21]
3 years ago
13

A different group of students decided to do this experiment by

Physics
1 answer:
GaryK [48]3 years ago
8 0

Answer:

Using an object of less mass can reduce the energy lost due to friction.

Explanation:

let the mass of the object be M.

acceleration due to gravity be g, coefficient of kinetic friction between object and slider be \alpha  , angle between horizntal and slider be ∅ and distance slided by the object be d.

work done by friction of the ramp will be the energy lost by ramp due to friction.

work done = force×displacement

force = \alpha×M×g×cos∅

displacement= d

therefore work done =  \alpha×M×g×cos∅×d

therefore on decreasing the mass M we can see that work done by friction decreases so the energy lost due to friction also decreases.

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The direction of an electric field is the direction (5 points)
vlabodo [156]

The direction of an electric field is determined from the behavior of a positive test charge that is set free in the electric field.This charge moves along a distinct vector showing the direction of the electric field  Therefore the answer is b. a positive charge will move in the field.

5 0
3 years ago
A baby carriage is sitting at the top of a hill that is 35 m high. The
Lemur [1.5K]
P=M(mass)G(Gravity)H(Height)

Gravity=9.8

M=1.5 G=9.8 H=35

so multiply all

=514.5 potential energy

5 0
2 years ago
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You use 350 W of power to move a 7.0 N object 5 m.<br> How long did it take?
PilotLPTM [1.2K]

Answer:

0.1 second

Explanation:

We are given;

Power; P = 350 W

Force; F = 7 N

Distance; d = 5 m

Formula for power is;

P = workdone/time taken

Workdone = F × d

Thus;

350 = (7 × 5)/t

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4 0
3 years ago
The moon does not have its own _____.
noname [10]
The moon does not have its own light. 
7 0
3 years ago
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A possum is trying to cross the street. Its velocity v as a function of time t is given in the graph below
AlladinOne [14]

Answer:

-10

Explanation:

The rectangular area is the base bbb times height hhh.

\begin{aligned}\Delta x&= A \\\\ &=(2\,\text s)\left (-5\,\dfrac{\text m}{\text s}\right ) \\\\ &= -10\,\text m\end{aligned}

Δx

​

 

=A

=(2s)(−5

s

m

​

)

=−10m

​

The possum displaces 10\,\text m10m10, start text, m, end text to the left.

4 0
3 years ago
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