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2 years ago

7

A machine has a mechanical advantage of 0.6. what force should be applied to the machine to make it apply 600 n to an object? 10

0 n 360 n 1000 n 3600 n

1 answer:

Akimi4 [234]2 years ago

6 0

Answer:

frictional force, should be applied to the machine

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if solid figures have parallel bases and lateral faces how the base will be perpendicular the lateral face

Sonja [21]

Each face of a solid figure is called either a base or a lateral face. Solid figures generally have one or two bases. If it has two, these bases are parallel. If a figure has two parallel bases and lateral faces, such as in a prism, the bases will be perpendicular to the lateral faces.

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3 years ago

When gasoline is burned in the cylinder of an engine, it creates a high pressure that pushes the piston. If the pressure is 100.

Marianna [84]

Answer:

$\dot W=2.1074\ hp$

Explanation:

Given:

pressure on the piston, $P=100\ psi=689476\ Pa$

diameter of the piston, $d=3\ in=0.0762\ m$

displacement of the piston, $s=0.05\ m$

time taken in the piston displacement, $t=0.1\ s$

<u>Now, we find the force on the piston:</u>

$F=P.A$

where, A = area upon which pressure acts

$A=\pi.\frac{d^2}{4}$

$A=\pi.\frac{0.0762^2}{4}$

$A=0.00456\ m^2$

$\therefore F=689476\times 0.00456$

$F=3144.2638\ N$

<u>we know that Power is given as:</u>

$\dot W=\frac{F.s}{t}$

$\dot W=\frac{3144.2638\times 0.05}{0.1}$

$\dot W=1572.1319\ W$

$\dot W=2.1074\ hp$

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3 years ago

Calculate the kinetic energy of a 0.032 kg ball as it leaves a hand to be thrown upwards at 6.2 m/s

AnnZ [28]

Answer:

The ball will have a kinetic energy of 0.615 Joules.

Explanation:

Use the kinetic energy formula

$E_k = \frac{1}{2}mv^2 = \frac{1}{2}0.032kg\cdot 6.2^2 \frac{m^2}{s^2}= 0.615J$

The kinetic energy at the moment of leaving the hand will be 0.615 Joules. (From there on, as it ball is traveling upwards, this energy will be gradually traded off with potential energy until the ball's velocity becomes zero at the apex of the flight)

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4 years ago

True or false: A friend tells you to walk 1 mile to get to their house. This is an example of a scalar quantity

Nadusha1986 [10]

Answer:

True

Explanation:

This the exact example I went over with my class during school and he said it word from word

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3 years ago

If you were on a decision making board with the task of choosing which innovation to fund, what criteria would you use to make y

faust18 [17]

Explanation:

The criteria for decision making would be

1. I would fund for the school of young diabetics, for the sole purpose of them leaning and being motivated for a healthy lifestyle.

2. I would also fund for new and improved insulin pumps as old ones cause multiple problems.

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3 years ago