All categories

4 years ago

When a light beam reflects from a plane mirror , how do you measure the angle of incidence

1 answer:

7 0

When a light beam reflects from a plane mirror, the angle of incidence is measured as the angle between the perpendicular to the surface of the mirror (normal line) and the incident ray (light beam) that hits the mirror.

You might be interested in

Which of the following are possible units for a spring constant?

ch4aika [34]

Answer:

Explanation:

The standard international (SI) unit for spring constant is N/m, so N/km is the same thing but bigger.

7 0

3 years ago

Read 2 more answers

Don't give links or anything besides an answer to this problem

alexdok [17]

Answer:

I think its the last one

Explanation:

The particles always move perpendicular to the direction of the wave.

7 0

3 years ago

Which plot correctly shows the velocity of the two balls as a function of time?

yanalaym [24]

The given in this problem is that two balls are thrown at different times, different heights and velocities. A blue ball is thrown upward at a specific velocity at a lower altitude while a red ball is thrown downwards at a specific speed and at a higher height. In this case, we are asked here to describe the graph of the behavior of the balls as a function of time. The x-axis then is time while the y-axis is the velocity of the ball. The blue ball has a quadratic function while the red ball is more or less exponential. See the attached figure for reference.

5 0

4 years ago

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses

Yuki888 [10]

Solution

Force between pair of objects of masses 1kg and 2kg that are 1m apart is given as

$F=G\times \frac{1\times 2}{1^2}$

here G is gravitational constant

G= $6.674\times10^{-11}Nm^2kg^{-2}$

therefore,

$F=6.674\times10^{-11}Nm^2kg^{-2}\times 2$

$F=13.348\times10^{-11}Nm^2kg^{-2}$

similarly Force between pair of objects of masses 2kg each that are 1m apart is given as

$F'=G\times \frac{2\times 2}{1^2}$

$F'=6.674\times10^{-11}Nm^2kg^{-2}\times 4$

$F'=2\times 13.348\times10^{-11}Nm^2kg^{-2}$

or F'=2F

it means Force between pair of objects of masses 2kg each that are 1m apart is equal to twice the Force between pair of objects of masses 1kg and 2kg that are 1m

7 0

3 years ago

Ecology is the study of

Anettt [7]

Answer:

Organisms and their environment

8 0

3 years ago