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Fudgin [204]
3 years ago
5

If we decrease the distance an object moves we will

Physics
2 answers:
hodyreva [135]3 years ago
7 0
Length of object . how much distance increase or decrease force
Alex787 [66]3 years ago
7 0

Answer:

Both sentences are true

Explanation:

Work formula:

W = F*d

where F is force applied to an object and d is the distance travelled by the object. As can be seen in the formula, work is  proportional to both force and distance. Then, if we decrease the distance an object moves we will  decrease the amount of work done, and if we increase the amount of force applied we will increase the amount of work done.

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What's a refractive medium that focuses light to a single point?
ss7ja [257]

Answer:

The convex lens is shaped so that all light rays that enter it parallel to its axis cross one another at a single point on the opposite side of the lens.

Explanation:

3 0
2 years ago
Paul’s 10 kg baby sister Susan sits on a mat. Paul pulls the mat across the floor using a rope that is angled 30° above the floo
kiruha [24]

Answer:

The speed of Susan is 2.37 m/s

Explanation:

To visualize better this problem, we need to draw a free body diagram.

the work is defined as:

W=F*d*cos(\theta)

here we have the work done by Paul and the friction force, so:

W_p=F_p*d*cos(0)\\F_p=30N*cos(30^o)=26N\\W_p=26*3*(1)=78J

W_f=F_f*d*cos(180)\\F_f=\µ*(10*9.8-30N*sin(30^o))=16.6N\\W_p=16.6*3*(-1)=50J

Now the change of energy is:

W_p-W_f=\frac{1}{2}m*v^2\\v=\sqrt{\frac{2(78J-50J)}{10kg}}\\v=2.37m/s

4 0
3 years ago
Read 2 more answers
Add a small ball to a graduated cylinder containing 10 milliliters of water.
malfutka [58]
The volume of water will increase . If yu subtract the original volume from the new volume of water you will get the volume of the small ball.
8 0
2 years ago
Match each term with the appropriate definition.
Ratling [72]

Answer:

mass- the amount of matter in an object

balance- tool used to measure mass

scale- a tool used to measure weight

weight- the downward pull on an object due to gravity

8 0
2 years ago
Which is the correct answer?
Masja [62]
The correct answer is A, 2x^3 - x^2 +3x +7

3 0
2 years ago
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