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2 years ago

What is the term used to describe a force that equals the sum of two or more forces

Physics

1 answer:

kirill115 [55]2 years ago

8 0

<h3>NET FORCE </h3>

The net force is equal to the sum of two forces acting in the same direction on an object. The net force is always bigger than the individual forces in this scenario.

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Pls pls pls pls pls help

Rzqust [24]

Answer:

what grade are you in so i can help

Explanation:

8 0

3 years ago

A metal begins to emit electrons, as measured in an apparatus similar to the one Hertz used, when exposed to light at a waveleng

balandron [24]

Answer : The work function of this metal is, $5.81\times 10^{-19}J$

Explanation : Given,

Wavelength of light = $342nm=342\times 10^{-9}m$

Formula used :

$E=h\nu_o=\frac{hc}{\lambda}$

where,

E = work function of metal

h = Planck's constant = $6.626\times 10^{-34}Js$

$\nu_o$ = threshold frequency

$\lambda$ = wavelength of light

c = speed of light = $3\times 10^8m/s$

Now put all the given values in this formula, we get the value of work function of this metal.

$E=\frac{hc}{\lambda}$

$E=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{(342\times 10^{-9}m)}$

$E=5.81\times 10^{-19}J$

Therefore, the work function of this metal is, $5.81\times 10^{-19}J$

7 0

3 years ago

Which statement correctly compares sound and light waves?

jek_recluse [69]

Answer:light waves carry energy parallel to the motion Of The wave, while sound waves carry energy perpendicular to it

Explanation:light waves carry energy parallel to the motion Of The wave while sound waves carry energy perpendicular to it

4 0

3 years ago

Read 2 more answers

A Carnot engine, operating between hot and cold reservoirs whose temperatures are 800.0 and 400.0 K, respectively, performs a ce

nalin [4]

Answer:

The ratio between W2 and W1 is

p=1.5

Explanation:

The W2/W1 ratio equals the efficiency ratio, since the heat input is constant.

Initially, the Carnot efficiency is

1 - (Tc/Th)

1 - 400/800 = 0.50

After lowering Tc, the efficiency becomes

1 - (Tc/Th)

1 - 200/800 = 0.75

So to determine the ratio between W2 and W1

W2/W1 = 0.75/0.50 = 1.5

5 0

3 years ago

What is the frequency of a wave when it has a wavelength of 2.17 m and is travelling across a rope at a speed of 31 m/s?

VikaD [51]

Answer:

i) b. 14.3 Hz

ii) d. 0.4625 m/s

Explanation:

f = c / λ

f = frequency

c = speed

λ = wavelength

first question:

the given values,

λ = 2.17 m

c = 31 m/s

f = c / λ

f = 31 / 2.17

f = 14.28

∴ f = 14.3 Hz

second question:

given,

λ = 0.25 m

f = 1.85 Hz

f = c / λ

rearranging,

c = f × λ

c = 1.85 × 0.25

c = 0.4625

∴ c = 0.4625 m/s

(love your username, btw.)

4 0

3 years ago