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3 years ago

Define: atomic mass unit(amu)

Physics

1 answer:

Harman [31]3 years ago

8 0

Answer:

The atomic mass is the mass of an atom. It is approximately equivalent to the number of protons and neutrons in the atom

Explanation:

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A ball is launched at an angle of 39.8 degrees up from the horizontal, with a muzzle velocity of 6.6 meters per second, from a l

Burka [1]

Answer:

1.85 m

Explanation:

The horizontal velocity of the ball is

$v_x = v cos \theta = (6.6 m/s) cos 39.8^{\circ}=5.1 m/s$

The horizontal distance travelled is

d = 2.7 m

And since the motion along the horizontal direction is a uniform motion, the time taken is

$t= \frac{d}{v_x}=\frac{2.7 m}{5.1 m/s}=0.53 s$

The vertical position of the ball is given by

$y= h + u_y t - \frac{1}{2}gt^2$

where

h = 1 m is the initial heigth

$u_y = v sin \theta = (6.6 m/s) sin 39.8^{\circ}=4.2 m/s$ is the initial vertical velocity

g = 9.82 m/s^2 is the acceleration due to gravity

Substituting t = 0.53 s, we find the height of the ball at this time:

$y=1 m + (4.2 m/s)(0.53 s) - \frac{1}{2}(9.82 m/s^2)(0.53 s)^2=1.85 m$

6 0

3 years ago

98 POINTS PLEASE HELP What can a transistor do in order to fulfill its function in a circuit? Check all that apply.

nordsb [41]

Control which layer is the emitter

6 0

3 years ago

Read 2 more answers

How many milliliters of water would be displaced by 408 G of lead?

Oksana_A [137]

408 grams has a volume of 408/11.35= 35.947cc

It displaces 35.947cc of water then it =35.947 milliliters

(If this isn't the answer please let me know and I'll help you the best I can. I hope you have a great day and enjoy!)

7 0

3 years ago

A(n) 6.6 kg bowling ball is rolling towards the bowling pins. If its momentum is 15.9 kg*m/s, how fast is it traveling, in m/s?

Vedmedyk [2.9K]

Answer:

2.4m/s towards the bowling pins

Explanation:

Given parameters:

Mass of the ball = 6.6kg

Momentum of the ball = 15.9kgm/s

Unknown:

Speed of the ball = ?

Solution:

The momentum is the amount of motion a body posses;

Momentum = mas x velocity

Insert the parameters and solve;

15.9 = 6.6 x velocity

velocity = 2.4m/s towards the bowling pins

3 0

3 years ago

Why does a mirror get misty after a shower??

masha68 [24]

This is because warm water vapor, suspended in the air, transforms back into water droplets as it cools. These small droplets collect on surrounding surfaces and are especially noticeable on materials such as glass since they distort light waves, making the mirror and windows appear foggy or misty

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3 years ago