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3 years ago

Horatio used the flat end of a hammer to remove a nail from a piece of wood.

2 answers:

3 0

Horatio used the flat end of a hammer to remove a nail from a piece of wood.This is an example of using a hammer as a lever. The answer is A. lever.

scoundrel [369]3 years ago

3 0

<h2>Answer:</h2>

<u>Removing nail by the flat end of the hammer is an example of </u><u>using hammer as a lever</u>

<h2>Explanation:</h2>

Lever is a type of simple machine and we know that machine is anything that makes the work of a human easier. By using hammer to remove a nail from wood is an example of lever. The input force is applied on the handle of hammer and a result the output force is experienced at the nail. Fulcrum is the area between the wood and the mouth of hammer by which we will remove the nail.

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3 years ago

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3 years ago

Your 64-cm-diameter car tire is rotating at 3.3 rev/swhen suddenly you press down hard on the accelerator. After traveling 250 m

umka21 [38]

Answer:

0.76 rad/s^2

Explanation:

First, we convert the original and final velocity from rev/s to rad/s:

$v_o = 3.3\frac{rev}{s} * \frac{2\pi rad}{1rev} =20.73 rad/s$

$v_f = 6.4\frac{rev}{s} * \frac{2\pi rad}{1rev}=40.21 rad/s$

Now, we need to find the number of rads that the tire rotates in the 250m path. We use the arc length formula:

$D = x*r \\x = \frac{D}{r} = \frac{250m}{0.64m/2} = 781.25 rads$

Now, we just use the formula:

$w_f^2-w_o^2=2\alpha*x$

$\alpha =\frac{w_f^2-w_o^2}{2x} = \frac{(40.21rad/s)^2-(20.73rad/s)^2}{2*781.25rad} = 0.76 rad/s^2$

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2 years ago

Read 2 more answers

Simple but not plagiarized answer for "what is forces and motion?"

egoroff_w [7]

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He used all his force in opening the window.

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2 years ago

QUESTION 23

Nutka1998 [239]

Answer:

E = 3600 J

Explanation:

Given that,

Voltage, V = 115 V

Power of electric bulb, P = 60 W

We need to find the electric energy used in 1 minute. The electric energy use is given by :

$E=P\times t\\\\E=60\ W\times 60\ s\\\\E = 3600\ J$

Hence, the electrical energy is 3600 J.

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3 years ago