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3 years ago

Which statements describe how a machine can help make work easier? Check all that apply.

Physics

1 answer:

nikdorinn [45]3 years ago

6 0

Answer:

It can exert a greater force through a greater distance than the force used on the machine.

Explanation:

A machine is a device that makes work easier and so it should exert greater force than the force applied on it.

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In the real world, How does conduction, convection and radiation work? (Examples needed) (WILL MARK BRAINLIST)

Naddik [55]

Conduction: someone burning their hand by placing their hand on a hot stove.

Convection: Food cooking in an oven.

Radiation: The heat we feel from the sun.

3 0

3 years ago

Which process has led to the production of most modern domesticated crops and livestock

boyakko [2]

A selective breeding. Put your best animals together to get better offspring.

6 0

3 years ago

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PLEASE HELP FOR PHYSICS!

Stolb23 [73]

Hi there!

Recall Newton's Law of Universal Gravitation:

$\large\boxed{F_g = G\frac{m_1m_2}{r^2}}$

Where:

Fg = Force of gravity (N)

G = Gravitational Constant

m1, m2 = masses of objects (kg)

r = distance between objects (m)

Plug in the given values stated in the problem:

$F_g = (6.673*10^{-11})\frac{50 * 50}{25^2} = \boxed{2.669 * 10^{-10} N}$

8 0

2 years ago

What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s2?

Sloan [31]

F=ma
f=4.5*9

40.5 N
hope this help

8 0

3 years ago

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Helium–neon laser light (λ = 632.8 nm) is sent through a 0.350-mm-wide single slit. What is the width of the central maximum on

Cloud [144]

Answer:

The width of the central bright fringe is 7.24 mm.

Explanation:

Given that,

Wavelength = 632.8 nm

Width d= 0.350 mm

Distance between screen and slit D= 2.00 m

We need to calculate the distance

Using formula of distance

$y_{m}=\dfrac{\lambda D}{d}$

Put the value into the formula

$y_{m}=\dfrac{632.8\times10^{-9}\times2.00}{0.350\times10^{-3}}$

$y_{m}=3.62\ mm$

We need to calculate the width of the central bright fringe

Using formula of width

$width = 2\times|y_{m}|$

Put the value into the formula

$width=2\times3.62$

$width = 7.24\ mm$

Hence, The width of the central bright fringe is 7.24 mm.

5 0

3 years ago