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Lerok [7]
3 years ago
6

What is the speed of the object at the end of 10 s?

Physics
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

-100m/s not shure tho thx tho

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in a billiards game, the white cue ball hits the black ball, moving the black ball to the right while the cue ball moves to the
Gemiola [76]

Answer:

The black ball moving to the right after being struck by the white ball

Explanation:

4 0
3 years ago
If the resultant force acting on a 2.0 kg object is equal to (3.0î + 4.0ĵ) N, what is the change in kinetic energy as the object
12345 [234]

Answer:

ΔK = 24 joules.

Explanation:

ΔK = Work done on the object

Work is equal to the dot product of force supplied and the displacement of the object.

W = F * Δs

Δs can be found by subtracting the vectors (7.0, -8.0) and (11.0, -5.0), which is written as Δs = (11.0 - 7.0, -5.0 - -8.0) which equals (4.0, 3.0).

This gives us

W = < 3, 4 > * < 4, 3 > = (3*4)+(4*3) = 24 J

3 0
1 year ago
A diffraction grating is illuminated simultaneously with red light of wavelength 660 {\rm nm} and light of an unknown wavelength
Tanzania [10]

Answer:

\lambda = 420 nm

Explanation:

As we know that position of maximum on the screen in diffraction pattern is given as

y = (\frac{2N + 1}{2})\frac{\lambda L}{d}

here we know that

position of third maximum due to red color light and position of fifth maximum of unknown wavelength are same

so we have

\frac{7 \lambda_r L}{2d} = \frac{11 \lambda L}{2d}

so we have

\lambda = \frac{7}{11} \lambda_r

\lambda = \frac{7}{11}(660 nm)

\lambda = 420 nm

7 0
4 years ago
How does a pedometer help people reach their fitness goals
goldfiish [28.3K]

how does a pedometer help people reach their fitness goals?

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b. It usually doubles as an MP3 player and keeps people motivated.  

c. They count steps during a workout.  

d. They measure the number of lifts done per exercise.

8 0
3 years ago
Read 2 more answers
Why does a dog circle its bed before lying down
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Answer

Doggy beds and pillows haven't always been around, so wild dogs had to pat down tall grass and underbrush to make a comfortable bed for themselves and their pups. The easiest way to prepare that night's sleeping area was by walking around in a circle. The rounding ritual may also have served as a safety precaution.

3 0
3 years ago
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