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Greeley [361]
3 years ago
5

How do physicists define velocity?

Physics
2 answers:
Natalija [7]3 years ago
7 0

Answer:

Velocity, quantity that designates how fast and in what direction a point is moving.

Explanation:

Elina [12.6K]3 years ago
6 0
Basically how fast and what direction it is pointing
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Your washer has power of 450 watts, and your dryer has a power of 3000
qaws [65]

Answer:

See explanations below

Explanation:

Power = Workdone/Time

Power of washer = 450watts

Time used to clean the clothes = 1hour = 3600secs

Energy used to clean a load of clothes in 1 hour of

washing = 450/3600

Energy used to clean a load of clothes in 1 hour of

washing = 0.125Joules

For drying;

Energy = 3000/1.5*3600

Energy = 3000/5400

Energy = 0.556Joules

Hence the energy in washing id 0.556Joules

4 0
2 years ago
If the speed and mass of an object are doubled, which of the following is true?
Harman [31]

Answer:

A is true

Explanation:

Other all are wrong I guess

7 0
3 years ago
A light spring stretches 0.13 m when a 0.35 kg mass is hung from it. The mass is pulled down from this equilibrium position an a
Alenkasestr [34]

Answer:

v = 1.30 m/s

Explanation:

given,

mass hung = 0.35 Kg

spring stretched when load is hanged  (x)= 0.13 m

now,

weight of the mass attached = Kx

             m g = k x

             0.35 x 9.8 = k x 0.13

                k = 26.38 N/m

now, using conservation of energy

 \dfrac{1}{2}mv^2 = \dfrac{1}{2}kx'^2

 v = \sqrt{\dfrac{kx'^2}{m}}

 v = \sqrt{\dfrac{26.38 \times 0.15^2}{0.35}}

 v = \sqrt{1.6958}

    v = 1.30 m/s

6 0
3 years ago
C.
Anna [14]

Answer:

fggdfddvdghyhhhhggghh

7 0
2 years ago
Which factor should change when comparing the boiling times of the liquids?
Andru [333]

Answer: B

Explanation:

7 0
3 years ago
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