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3 years ago

What is machinery............

1 answer:

8 0

an assemblage of machines or mechanical apparatuses: the machinery of a factory. the parts of a machine, collectively: the machinery of a watch. a group of people or a system by which action is maintained or by which some result is obtained: the machinery of government.

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A hypothetical planet has a mass of 1.66 times that of Earth, but the same radius. What is gravitiy near its surface?

baherus [9]

Answer: 16.22 m/s^2

Explanation: g= GM/r^2 G= (6.67x 10^-11) M= 1.66(6x 10^24) r=(6400x 10^3) so

((6.67x10^-11)(1.66x 6x 10^24))/ (6400x10^3)^2 = 16.22 m/s^2

6 0

4 years ago

Read 2 more answers

What is the elastic potential energy of a spring that is compressed a distance of 0.35 m and has a spring constant of 71.8 N/m?

Vitek1552 [10]

Answer:

P.E = 4.398 Joules.

Explanation:

Given the following data;

Spring constant, k = 71.8N/m

Displacement, x = 0.35m

To find the elastic potential energy;

The elastic potential energy of an object is given by the formula;

$P.E = \frac {1}{2}kx^{2}$

Substituting into the equation, we have;

$P.E = \frac {1}{2}*71.8 *(0.35)^{2}$

$P.E = 35.9 * 0.1225$

Elastic potential energy = 4.398 Joules.

Therefore, the elastic potential energy of the spring is 4.398 Joules.

3 0

3 years ago

A voltage amplifier needs a high input resistance and a low output resistance. Select one: True False

cupoosta [38]

Answer:

Explanation:

In electric circuit , the potential difference is always developed across the resistance .

Now is we are to amplify the voltage , that means low input voltage is converted into high voltage output .

Therefore we require low resistance at input for low voltage and high out put resistance for high output

Thus the statement given is wrong .

6 0

3 years ago

Which of the following is a measure of velocity?

Nana76 [90]

30 m/s because that is the form that suppose to be for velocity

3 0

3 years ago

A body of mass 250g is release from the top of a building. if the body hits the ground with a velocity of 4m/s, calculate th hei

Nutka1998 [239]

$\purple{\maltese}\large\underline{\underline{\sf\:\: Given :}} \\$

» Mass ( m ) of the body = 250 g

» final velocity of the body = 4 m/s

$\\\purple{\maltese}\large\underline{\underline{\sf\:\: To \: \: Find :}} \\$

» The height of the Building= ??

$\\\purple{\maltese}\large\underline{\underline{\sf\:\: Solution :}} \\ \\$

★ Height of the building by the principal of conservation;

$\\\\\begin{gathered}\purple{\maltese}\large\underline{\underline{\sf\:\: using \: formula :}} \\ \\\end{gathered}$

$\bigstar \: \underline{ \boxed{\sf { \pink{ \: \frac{1}{2} \: \: mv { }^{2} = \: mgh \: }}}}$

$\\ \: \: \underline{\textsf {Putting values \: in \: the \: \: given \: formula :}} \\$

$\\ \sf \implies \: \frac{1}{2} \: \: mv { }^{2} = \: mgh \: \\$

$\\ \sf \implies \: \frac{v {}^{2} }{2} \: \: = \: gh \: \\$

$\\ \sf \implies \: h \: = \frac{v {}^{2} }{2g} \: \: \: \\$

$\\ \sf \implies \: h \: = \frac{16 }{20} \: \: \: \\$

$\\ \sf \implies \: h \: = 0.8 \: \: \: m \\$

$\\ \sf \implies \: h \: = 80 \: \: \: cm \\$

henceforth , The height of the Building is 0.8 m or 80 cm ..!!!

5 0

2 years ago

What is machinery............​

What is machinery............