What are the four forms that water takes when it returns to earth from the clouds?

Answers

Answer 1

Answer: Precipitation from the sky to the earth can come in several forms. Four types are:1) Rain2) Snow3) Sleet (think of a more liquidity slushy snow)4) Hail (pretty much solid chunks of ice)

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Suppose you wanted to do an experiment to find out if changing the length of a pendulum changed the amount of time it takes the pendulum to swing back and forth. Which pendulums from the above diagram would you use for the experiment?a.1 and 4 b.2 and 4 c.1 and 3 d.2 and 5 e.all

A net force of 200 newtons is applied to a wagon for 3 seconds. This cause the wagons to undergo a change in momentum of ?

Answers

physics- damon, Monday, December 1, 2014 at 3:27 pm force =change in momentum\ change in time or m a if m is constant

change in momentum/3=200

change in momentum =3*200 kg m/s

If you double the distance between two objects, the electric force is _____.A. one half as strong

B. doubled

C. one fourth as strong

D. quadrupled

Answers

Answer:

decreases one fourth of the original value.

Explanation:

according to coulomb's law the electrostatic force of attraction and repulsion magnitude is directly proportional to the product of magnitude of charges and inversely proportional to their distance (square distance).

So increases in distance between two charges results in decrease of electric force between two charges.

Answer:

C. one fourth as strong

Explanation:

Electric force is indirectly proportional to the square of the distance, so if you double the distance, electric force is = 1/2^2 = 1/4

In short, Your Answer would be: Option C

Hope this helps!

Is it possible to get a body accelerated even if it is moving with uniform speed? justify.

Answers

Answer:Yes, A body can have constant speed but still accelerate as in case of uniform circular motion. In uniform circular motion speed remains constant and direction of velocity changes with every point in the direction of tangent drawn from that point.

Explaination:

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Why are x-rays and the radiation emitted by radioisotopes called ionizing radiation?

Answers

Ionizing radiation is any type of particle or electromagnetic wave that carries enough energy to ionize or remove electrons from an atom. There are two types of electromagnetic waves that can ionize atoms: X-rays and gamma-rays, and sometimes they have the same energy. CREDIT: PhysicsCentral.com

What is the pendulum length whose period is 2.0s ?

Answers

$Formula\ for\ period:\n\ T=2 \pi \sqrt{(L)/(g)}\n\ g-gravity=9,8 (m)/(s^2) ,\ L-pendulum \ length \n\n (T)/(2 \pi ) = \sqrt{ (L)/(g) }|square\n\n (T^2)/(2 \pi ) = (L)/(g) \n\n\ (T^2)/(2 \pi )*g=L\n\n L= (2^2)/(2*3,14 )*9,8= (39,2)/(6,28) =6,24m$ $T=2 \pi \sqrt{(L)/(g)} \n (T)/(2 \pi ) = \sqrt{ (L)/(g) }|square\n (T^2)/(2 \pi ) = (L)/(g) \n (T^2)/(2 \pi )*g=L\n L= (2^2)/(2*3,14 )*9,8= (39,2)/(6,28) =6,24m$

In a laboratory experiment, an ultrasound detector located at D is used to measure the distances of two moving objects, P and Q. At a certain moment, P and Q are located as shown in the diagram. What is distance PQ?. a) 6.82. b)5.66. c)4.74. d)4.24. e)3.89. .

Answers

Triangle PDQ has:

Side "p" is opposite Angle P

Side "d" is opposite Angle D = 45º + 23º = 68º

Side "q" is opposite Angle Q

Use the Law of Cosines:

d² = p² + q² − 2 • p • q • cos(D)

d² = (4.24)² + (4.24)² − 2 • (4.24) • (4.24) • cos(68º)

d² = 2(4.24)² − 2(4.24)² • cos(68º)

d² = 2(4.24)² • [ 1 – cos(68º) ]

d = 4.74 ft

The distance PQ is 4.74 feet.

Calculations and Parameters:

Triangle PDQ has:

Side "p" is opposite Angle P
Side "d" is opposite Angle D = 45º + 23º = 68º
Side "q" is opposite Angle Q

If we use the Law of Cosines:

d² = p² + q² − 2 • p • q • cos(D)

d² = 2(4.24)² • [ 1 – cos(68º) ]

d = 4.74 ft