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Art [367]
3 years ago
7

What does a machine change to make work easier? Check all that apply. the amount of work done the amount of force applied the ti

me needed to do the work the direction of a force the distance over which a force is applied
Physics
2 answers:
raketka [301]3 years ago
7 0

The correct options are:

2.) the amount of force applied

4.) the direction of a force

5.) the distance over which a force is applied


Please mark as brainliest! :)

natulia [17]3 years ago
4 0

A machine can change the amount of force required to do the work and makes the work easier because work is the dot product of force and displacement.

A machine can change the distance required to do the work and makes the work easier because work is the dot product of force and displacement.

A machine can change the direction of force to do the work and makes the work easier because work is the dot product of force and displacement.

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How do we know the age of the canyon diablo meteorite ?
Nostrana [21]

Answer:

how ever many layers it has i think

Explanation:

4 0
3 years ago
A meter stick moves parallel to its axis with speed of 0.96 c relative to you. What would you measure for the length of the stic
Fed [463]

Answer:

The length of the stick is 0.28 m.

The time the stick take to move is 0.97 ns.

Explanation:

Given that,

Relative speed of stick v= 0.96 c

Speed of light c= 2.99793\times10^{8}\ m/s

Proper length of stick = 1 m

We need to calculate the length of the stick

Using formula of length

\Delta l=\Delta l_{0}\sqrt{(1-\dfrac{v^2}{c^2})}

Put the value into the formula

\Delta l=1\sqrt{1-\dfrac{(0.96)^2c^2}{c^2}}

\Delta l=1\sqrt{1-(0.96)^2}

\Delta l=0.28\ m

We need to calculate the time the stick take to move

Using formula of time

t=\dfrac{\Delta l}{v}

Put the value into the formula

t=\dfrac{0.28}{0.96\times(2.99793\times10^{8})}

t=9.72\times10^{-10}\ sec

t=0.97\ ns

Hence, The length of the stick is 0.28 m.

The time the stick take to move is 0.97 ns.

7 0
3 years ago
Compare these two waves
otez555 [7]

None of the choices in the picture is correct.

The blue wave has a higher pitch than the orange one, (because its waves are shorter so there are more of them in the same length of time).

AND the blue wave is also louder than the orange one, (because the amplitude of its waves is slightly greater).

4 0
3 years ago
The temperature of a plastic cube is monitored while the cube is pushed 3.4 m across a floor at constant speed by a horizontal f
Nesterboy [21]

Answer:

\Delta E_{floor} = 51 J

Explanation:

The work (W) done on the cube to be pushed across the floor is equal to the total thermal energy (ΔE) of the system:        

W = \Delta E_{T} = \Delta E_{cube} + \Delta E_{floor} (1)

Also, the work done on the cube by the horizontal force is giving by:

W = F \cdot d (2)  

<em>where F: force applied to the cube , d: displacement of the cube     </em>    

<em>By equaling the equations (1) and (2)</em>, we can find the thermal energy of the floor:  

\Delta E_{cube} + \Delta E_{floor} = F \cdot d

\Delta E_{floor} = F \cdot d - \Delta E_{cube}

\Delta E_{floor} = 20 N \cdot 3.4 m - 17 J  

\Delta E_{floor} = 51 J

 

So, the increase in the thermal energy of the floor is 51 J.  

Have a nice day!    

7 0
3 years ago
Help please ! Ill give brainliest !! ☁️✨
KATRIN_1 [288]
Answer:
Force Meter > used to measure force
Milli > Prefix that means 1/1,000
Centi > Prefix that means 1/100
Kilo > Prefixes that means 1,000
Thermometer > used to measure Temperature


Explanation: uh just trust
3 0
3 years ago
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