A box is initially sliding across a level floor at 10 m/s before being subjected to the forces shown below.

Two arrows are fired horizontally with the same speed of

Fed [463]

Answer:

Explanation:

Given

mass of each arrow=0.1 kg

velocity of arrow=30 m/s

One arrow is fired u=due to east and another towards south

Momentum of first arrow

$P_1=0.1\left ( 30\hat{i}\right )=3\hat{i}$

$P_2=0.1\left ( -30\hat{j}\right )=-3\hat{j}$

Total momentum P

$P=P_1+P_2$

$P=3\hat{i}-3\hat{j}$

magnitude $|P|=\sqrt{3^2+3^2}=3\sqrt{2}$

direction

$tan\theta =\frac{-3}{3}$

$\theta =45^{\circ}$ clockwise w.r.t to east

6 0

3 years ago

.A formula that contains 2 elements is called a.

mr Goodwill [35]

Answer:

I think it is H2O . Formula of water

4 0

3 years ago

Which statement best explains the difference between light waves traveling through a vacuum and light waves traveling through a

mrs_skeptik [129]

Answer:

The statement which best explains the difference between the light waves travelling through a vaccuum and light waves travelling through a medium is -"When light waves travel through a vacuum, they travel faster than when they travel through a medium."

Explanation:

Light waves are faster in vacuum because The refractive index of vacuum is the lowest since there is no barrier in the way of light propagation in vacuum. Demonstrate that the maximum speed of light in vacuum.

In a vacuum, light flies at 186,283 mph. Light flies at 186,200 mph in the air, or 56 mph slower. In another medium, such as water, light travels at 139,712 mph, or around 3/4 of the speed of light in a vacuum.

LIGHT WAVES -: Light waves are a form of electromagnetic wave that includes both visible and invisible to the naked eye wavelengths on the electromagnetic spectrum. The average human eye can see light with wavelengths ranging from 390 to 700 nanometers, or nm.

Forms of light waves comprises of Radio waves , microwaves , infrared waves , visible light etc.

6 0

3 years ago

One end of the inclined plane is always higher than the other

Charra [1.4K]

Answer:

yes then what did you want to learn

5 0

3 years ago

A paintball is shot horizontally in the positive x direction at time t after the ball is shot it is 4 cm to the right and 4 cm b

Artist 52 [7]

Answer: