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Anna71 [15]
3 years ago
10

A log splitting machine was invented to split logs quickly. A motor powers a metal piece that is pushed through the middle of a

log. The metal piece used to split a log is an example of what simple machine?a. wedgeb. pulleyc. screwd. lever
Physics
1 answer:
Alexandra [31]3 years ago
8 0

Answer:

a. wedge

Explanation:

The wedge machine is used to separate, lift or split

objects. It is triangular in shape with a tapered formation thick and blunt on one end, thin on the other end (the edge)

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Two pieces of clay are moving directly toward each other. When they collide, they stick together and move as one piece. One piec
Wittaler [7]

Answer:

The fraction of the total initial kinetic energy is lost during the collision is \dfrac{11}{17}\ J

Explanation:

Given that,

Mass of one piece = 300 g

Speed of one piece = 1 m/s

Mass of other piece = 600 g

Speed of other piece = 0.75 m/s

We need to calculate the final velocity

Using conservation of energy

m_{1}v_{1}+m_{2}v_{2}=(m_{1}+m_{2})v

Put the value intro the formula

300\times10^{-3}\times1+600\times10^{-3}\times(0.75)=(300\times10^{-3}+600\times10^{-3})v

v=\dfrac{00\times10^{-3}\times1+600\times10^{-3}\times(-0.75)}{(300\times10^{-3}+600\times10^{-3})}

v=-0.5\ m/s

We need to calculate the total initial kinetic energy

Using formula of kinetic energy

K.E_{i}=\dfrac{1}{2}m_{1}v_{1}^2+\dfrac{1}{2}m_{2}v_{2}^2

Put the value into the formula

K.E_{i}=\dfrac{1}{2}\times300\times10^{-3}\times1^2+\dfrac{1}{2}\times600\times10^{-3}\times(0.75)^2

K.E_{i}=0.31875\ J

We need to calculate the total final kinetic energy

Using formula of kinetic energy

K.E_{f}=\dfrac{1}{2}(m_{1}+m_{2})v^2

Put the value into the formula

K.E_{f}=\dfrac{1}{2}\times(300\times10^{-3}+600\times10^{-3})\times(-0.5)^2

K.E_{f}=0.1125\ J

We need to calculate the energy lost during the collision

Using formula of energy lost

energy\ lost=\dfrac{0.31875-0.1125}{0.31875}

energy\ lost=\dfrac{11}{17}\ J

Hence, The fraction of the total initial kinetic energy is lost during the collision is \dfrac{11}{17}\ J

3 0
3 years ago
Which of these describe the composition of earths atmosphere?
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Earth's atmosphere is a <em>mixture</em> of gases that have
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which statement correctly describes the relationship between a black body radioterapia it’s tmeptaute and the electromagnic radi
jasenka [17]
It’s A if there’s multiple choices
7 0
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What is the distance time how can we find the speed of an object from its distance time graph​
CaHeK987 [17]

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speed is the gradient of the graph

7 0
3 years ago
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The volume of a cube shaped fish tank in guy Harvey's restaurant is 64 cubic feet the cube shaped fish tank in the gift shop is
trapecia [35]

Answer:

The difference between the length of the sides of the fish tank is guy Harvey's restaurant and a  fish tank in gift shop is 2 feet.

Explanation:

The cube shaped fish tank in guy Harvey's restaurant has volume 64 cubic feet.

Volume of the cubic tank is given by,

V = l^{3}

64 = l^{3}

l = \sqrt[3]{64}

l = 4 feet

The cube shaped fish tank in the gift shop is 8 cubic feet

Volume of the cubic tank is given by,

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The difference between the length of the sides is given by,

d = l - a

d = 4 - 2

d = 2 feet

The difference between the length of the sides of the fish tank is guy Harvey's restaurant and a  fish tank in gift shop is 2 feet.


5 0
3 years ago
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