PHYSICS HIGH SCHOOL

The term used to describe the quantity of matter that a body possesses is

Answers

Answer 1
Answer: The body mass index.
Answer 2
Answer: The term used to describe the quantity of matter that a body possesses is mass. 

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Which state of matter is most likely represented in the image?
PLEEASEEE HEELLPPPP !!!!!!!
Compute the resistance in ohms of a copper block 5.0 cm long and 0.10 cm2 in cross-sectional area. (ρ = 1.77 × 10-6 ohm-cm)
To pull a 50 kg crate across a horizontal frictionless floor, a worker applies a force of 210 N, directed 20° above the horizontal. As the crate moves 3.0 m, what work is done on the crate by (a) the worker's force, (b) the gravitational force on the crate, and (c) the normal force on the crate from the floor? (d) What is the total work done on the crate?
What are some examples of X-Ray waves

From what is known about spring tides and neap tides, you can conclude that:_________. a. the sun’s gravity exerts the most power when the moon is on the opposite side of the Earth from the sun.
b. the height of high tides varies with the phases of the moon.
c. spring tides and neap tides affect the phases of the moon.
d. the moon revolves around the Earth every 14 days.
Please select the best answer from the choices provided

Answers

Answer:

D

Explanation:

Because neap and spring tides happen twice a month during new moon and full moon .It occurs twice in a month which is 14 days

Answer:

i think it is d

Explanation:

HEY CAN ANYONE PLS HELP ME IN DIS! Which prefix represents a unit that is larger than "centi-" ? a. "nano-" b. "pico-" c. "milli-" d. "deci-" e. "micro-"

Answers

i believe it’s d.)deci

Images produced by a cathode ray tube result from induced emf True or false

Answers

i'm not completely sure but i think it's false 

A string is wrapped around a pulley with a radius of 2.0 cm. The pulley is initially at rest. A constant force of 50 N is applied to the string, causing the pulley to rotate and the string to unwind. If the string unwinds 1.2 m in 4.9 s, what is the moment of inertia of the pulley

Answers

Answer:

0.20kg-m^2

Explanation:

Let the linear velocity of the rope(=of pulley) is v m/s

Using kinematic equation

=> v = u + at

=>v = 0 + 4.9a

=>v = 4.9a ------------ eq1

By v^2 = u^2 + 2as

=>v^2 = 0 + 2 x v/4.9 x 1.2

=>4.9v^2 - 2.4v = 0

=>v(4.9v - 2.4) = 0

=>v = 2.4/4.9 = 0.49 m/s

Thus by v = r x omega

=>omega = v/r = 0.49/0.02 = 24.49 rad/sec

BY W = F x s = 50 x 1.2 = 60 J

=>KE(rotational) = W = 1/2 x I x omega^2

=>60 = 1/2 x I x (24.49)^2

=>I = 0.20 kg-m^2

A skier starting from rest accelerates in a straight line down a 43,000 m slope at 1 m/s. How fast were they moving after 5 s?

Answers

Answer:

5m/s

Explanation:

The skier accelerates at 1 m/s, then, the acceleration is:

a=1(m)/(s^2)

to find the speed after 5 seconds you use the following formula:

a=(v-v_o)/(t)

but vo = 0m/s because the skier is at rest at the beginning.

You do v the subject of the formula:

v=at=(1(m)/(s^2))(5s)=5(m)/(s)

hence, the velocity is 5m/s

Which contributes to acid rain? A. solar power

B. burning fossil fuels

C. nuclear power

D. hydroelectric power

Answers

The answer is D. hydroelectric power
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