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EastWind [94]
3 years ago
6

PLS HELP BEST PRESENT EVER!!!!!!!!!!!!!

Physics
1 answer:
galina1969 [7]3 years ago
6 0

velocity=distance/time

v=d/t

v=4.77m/19.5s=0.24m/s

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Which expression allows you to determine the mechanical advantage of an inclined plane?
Leya [2.2K]

Answer:

(C) length / height of the plane

Explanation:

The mechanical advantage of an inclined plane can be determined using different variables. In this case, the geometry of the setup is relevant. The advantage is proportional  to the length of the plane, and inversely proportional to the height: it is the ratio (length) / (height) of the plane. For example, given a desired, fixed height, a long inclined plane gives you a bigger mechanical advantage than a short inclined plane. In this example, pushing an object up the long plane will require a smaller force, than it would on the short plane.

Strictly speaking, (D) would also "allow you to determine the mechanical advantage" because you could simply invert the ratio listed under (D). However, (C) is the best, direct, answer.

4 0
3 years ago
The legend that Benjamin Franklin flew a kite as a storm approached is only a legend; he was neither stupid nor suicidal. Suppos
UNO [17]

Answer:

The current on the water layer = 1.64×10^-3A

Explanation:

Let's assume that the radius given for the string originates from the centre of the string. The equation for determining the current in the water layer is given by:

I = V × pi[(Rwater + Rstring)^2 - (Rstring)^2/ ( Resitivity × L)

I =[ 166×10^6 ×3.142[(0.519×10^-4) + (2.15×10^-3])^2 - ( 2.15×10^-3)^2] / ( 183 × 831)

I =[ 521572000(4.848×10^6)- 4.623×10^-6]/ 154566

I = 252.83 -(4.623×10^-6)/ 154566

I = 252.83/154566

I = 1.64× 10^-3A

3 0
3 years ago
What did j.J. Thomson discover about the composition of atoms?
nordsb [41]

Answer:

J.J. Thomson discovered <u><em>the electron</em></u> by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. In addition, he also studied positively charged particles in neon gas.

Explanation:

the answer is the underlined part of the answer section. I hoped this helped you a lot!! Study hard for whatever you are doing!!

5 0
3 years ago
Natalia lifts a bag of groceries 0.50 m by exerting a force of 36 N. How much work did she do on the bag?
Kruka [31]
<h3><u>Answer;</u></h3>

18 Joules

<h3><u>Explanation;</u></h3>
  • <em><u>Work is the measures the transfer of energy when an object moves over a given distance.</u></em>
  • Work is therefore given by; Force × distance

Force =36 Newtons

Distance = 0.5 meters

  • Hence; <em>work = 36 N × 0.5 N</em>

<em>                                = 18 Joules </em>

5 0
3 years ago
Read 2 more answers
The strong nuclear force is ?
Zarrin [17]

Answer: Option B

Explanation:

The nuclear force is the strongest force in the universe. It is much more stronger than all the other forces and is 100 times stronger than the electric force.

The nuclear forces can be defined as the forces generated due to electron and protons in which the electrons have negative charge on it and the protons have positive charge on it.

Due to this force all the atoms and molecules, elements and compounds are held together.

6 0
3 years ago
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