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2 years ago

Write the types of lever with 5.5 example

Physics

1 answer:

tekilochka [14]2 years ago

7 0

First class lever -- Teeter-totter, Oars on a boat, Catapult, Shoehorn, Scissors, Pair of pliers

Second class lever -- Wheelbarrow, Crowbar, Nut cracker, Doors or gates, bottle openers

Third class lever -- Tweezers, Stapler, Mousetrap, Broom, Hockey stick

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A speeding Thunderbird left skid marks on the road that were 76.7 m long when it came to a stop. If the acceleration of the car

FrozenT [24]

Answer: 39.2 m/s

Explanation:

You can use the kinematic equation:

$v_f^2=v_i^2+2a*d$

We know the final velocity because it says it came to a stop. So now all we gotta do is plug in.

$0^2=v_i^2+2(-10)(76.7)\\v_i^2=1,534\\v_i=\sqrt{1534} \\=39.166 m/s$

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2 years ago

PLEASE HELP ASAP!!<br><br> Which of the following diagrams represents a complete series circuit?

Iteru [2.4K]

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2 years ago

Calculate the force on the test charge by the +6μC charge. Hint: The force in the positive x-direction is positive and the neg

DIA [1.3K]

Answer:

The force on the test charge is 114.75 N.

Explanation:

Given that,

Test charge $q=6\ \mu C$

Suppose the test charge is 3.4 μC and the distance between the charge and test charge is 4.0 cm.

We need to calculate the force on the test charge

Using formula of electric force

$F=\dfrac{kqq_{1}}{r^2}$

Where, q = test charge

q₁ =charge

r = distance

Put the value into the formula

$F=\dfrac{9\times10^{9}\times6\times10^{-6}\times3.4\times10^{-6}}{(4.0\times10^{-2})^2}$

$F=114.75\ N$

Hence, The force on the test charge is 114.75 N.

6 0

3 years ago

1. It is dangerous "cutting" in front of trucks when turning left or passi g them and then slowing down

erastovalidia [21]

Answer: trucks take twice as long to stop

Explanation:

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3 years ago

A skateboard with a mass of 4 kg is moving at a speed of 10 meters per second on a level surface. It encounters a hill and rolls

telo118 [61]

Answer:

vertical height = 5.1 meters

Explanation:

M = 4 kg

V = 10 m/s^2

Based on the law of conservation of energy, energy can be converted from one form to energy.

Calculate the kinetic energy of the skateboard.

Kinetic energy = 1/2 * (MV^2)

K.E = 1/2 * ( 4 * 10^2)

K.E 0.5 * 400

K.E = 200 Joules

According to conservation of energy, Kinetic Energy = Potential Energy = 20 joules

P.E = Mgh

200 = 4 * 9.8 * h

h = 200/ 39.2

h = 5.1 meters

7 0

2 years ago

Write the types of lever with 5.5 example​

Write the types of lever with 5.5 example