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Sophie [7]
3 years ago
5

All lenses are objects that _____.

Physics
1 answer:
Korolek [52]3 years ago
8 0

Answer:

B AND D ARE THE CORRECT OPTIONS

HOPE ITS HELPFUL.....

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Light from a red laser pointer has a speed of 3.0×10^8 m/s and has a wavelength of 6.5×10^−7 m . What is the frequency of this l
Vaselesa [24]

Answer:

the answer is b

Explanation:

because you multiply speed times wavelength

6 0
3 years ago
Read 2 more answers
A boat can move at a constant velocity of 8 km/h in still water. How long will it take for the boat to move 24 km?
Elis [28]

Answer: D.) 3hrs

Explanation:

Given the following :

A boat can move at a constant velocity of 8 km/h; How long will it take for the boat to move 24 km

Recall:

Velocity = Displacement / time

For the boat to travel a distance of 24 km at a constant velocity of 8km /hr

Time taken = Displacement(distance moved) / velocity

Time taken = 24km / 8kmhr^-1

Tine taken = 3hrs

4 0
3 years ago
3. The car's mass is 400 kg. It moves at a velocity of 20 m/s. Calculate the car's momentum. *
Orlov [11]

Answer:

momentum=mass×velocity

momentum =400kg×20m/s=8000kg.m/s

7 0
3 years ago
A golfer takes three putts to get the ball into the hole. The first putt displaces the ball 3.32 m north, the second 1.57 m sout
bixtya [17]

Answer:

The answer to the question is

The magnitude of the displacement needed to get the ball into the hole in just one putt is 1.746m in the direction of 23.41° north east

Explanation:

With trigonometric relation and the attached diagram we have

From the diagram the location of the hole is 3.32m- (1.57 cos45 +0.78co45)m North and

1.57sin 45 – 0.78 sin 45 meters west

1.658m north and

0.55m east

Thus the direction of the hole is 26.41 degrees  

North east

The magbitude of the displacement is  displacement is gotten from the relation diplacement of x and y =√(x²+y²)

\sqrt{1.658^{2} +0.55^{2}  } = 1.746 m∠26.41°

3 0
3 years ago
What is the speed of a wave if the wavelength is 100 m and the period is 20 s?
bulgar [2K]
120m speed of a wave if the wavelength
3 0
3 years ago
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