pls help i’ll give brainliest if you give a correct answer!!

Answer:

800J

Explanation:

Given data

Force= 100N

Distance moved= 8m

The expression for the work done is

WD= Force* distance

substitute

WD= 100*8

WD= 800Joules

Hence the work done is 800J

Answer:

B

Explanation:

To discover gold

Answer:7.92 m/s

Explanation:

A ball is thrown horizontally from the roof of a building 50. m tall and lands 45 m from the base then the ball's initial speed is 14.10 m/s

The rate of change of position of an object in any direction is called speed. Speed is scalar quantity.

speed = distance/time

s=d/t

Where,

s is the speed in m/sec

d is the distance travaled in m

t is the time taken in sec

Given that in the question ball travel a height from building of 50 m to a distance 45 m from the base so total distance travelled is given as 45 m.

Body is travelling downward under the influence of gravity.

Using equation of motion under gravity,

y = ut + ½gt² , where u = 0 m/s in y direction  and

y = ½gt²

t² = 2y / g

t² = 2*50/9.8

t  =  3.19 sec

ball's initial speed in x direction is given as

u = 45/3.19

u= 14.10 m/sec.

The balls initial speed is given as 14.10 m/sec.

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Sound is transmitted through gases, plasma or blood, and liquids as longitudinal waves, also called compression waves. It requires a medium to propagate. Through solids, however, it can be transmitted as both longitudinal waves and transverse waves.

For example, when you flick the rim of a glass, the glass will vibrate imperceptibly. These vibrations move through the air and strike the ear drum of anyone within hearing range (click here to find out 'How Our Ears Hear'). In fact, these vibrations, or sound waves, can move through any medium: gas, liquid or solid.

(PLEASE mark as brianliest!)

we will use one of the kinematic equations :

d = u*t+0.5*a*t²

in which : d : distance

u : initial velocity

a : acceleration

t : time

after substitution :

initial velocity = 0 m/s (from rest)

2.8 = 0*t+0.5*7.14*t²

2.8 = 3.57*t²

t² = 0.7843

after square root

t = 0.885615 s

I hope this answer will help

Answer:

120

Explanation:

Momentum = mass * velocity

Mass = 15

Velocity = 8

Momentum = 15*8

Momentum = 120

Answer:

The answer is already given... it's 31.25 cm

Answer:

The answer is "[tex]\bold{0.36363 \ \frac{m}{s}}[/tex]"

Explanation:

Please find the attached file of the complete question:

Given:

[tex]m= 2.2 \ kg\\\\t= 40 \ ms[/tex]

Using formula:

[tex]\to F=ma[/tex]

       [tex]= 2.2 \ (a)\\\\= 2.2 \ \frac{dv}{dt}[/tex]

but  

[tex]\to F= f(t)\\\\[/tex]

[tex]\to 2.2 \ a= f(t)\\\\ \to 2.2 \ \frac{dv}{dt}=f(t)\\\\ \to \int^{v}_{0} \ dv =\int^{t= 40 ms}_{0} (\frac{f(t)}{2.2}) \ dt\\\\[/tex]

[tex]\to v= \frac{\text{(Area of given graph)}} {2.2} \\\\[/tex]

      [tex]=\frac{1}{2} \times \frac{1}{2.2} \times 40 \times 40 \times 10^{-3} \ s\\\\= \frac{1}{4.4} \times 40 \times 40 \times \frac{1}{1000} \ s\\\\= \frac{1}{4.4} \times 16 \times \frac{1}{10} \ s\\\\= \frac{16}{44} \ s\\\\= 0.36363 \ \frac{m}{s}[/tex]

Answer:

a

Explanation:

If the distance increase, the gravity increase

Answer:a. 24 kg m/s

b.  3/5s

Explanation:

a.impulse is the change in momentum so at first the momentum is zero because the ball was at rest and the final momentum is 1.2kg*20m/s=24 kg m/s

so the impulse would be (24-0) kg m/s=24 kg m/s

b. so the impulse equation is impulse is force *delts time

so 24 kg m/s=40N*t

t=24 kg m/s /40N=3/5 s

Answer:

it will option B,hope it helps

C. The wavelength is longer.

A sound wave is called a longitudinal wave because compressions and rarefactions in the air produce it.

The air particles vibrate parallel to the direction of propagation.

A longitudinal wave consists of a repeating pattern of compressions and rarefactions.

Thus, the wavelength is commonly measured as the distance from one compression to the next adjacent compression or the distance from one rarefaction to the next adjacent rarefaction.

Longitudinal waves move through a medium from the point of the disturbance in the form of compressions (where particles of the medium are bunched together) followed by rarefactions (where particles of the medium are farther apart).

In longitudinal waves, the distance from one compression to the next is the wavelength.

Therefore,

In longitudinal wave the wavelength is longer.

Learn more about Longitudinal wave here:

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Answer:

6.44pie

Explanation:

[tex]2\pirh[/tex]

Answer:

9 ohms

Explanation:

P = V²/R

R = v²/p = 6²/4 = 36/4 = 9 ohms.

The resistance is 9 Ohm.

To find the resistance, we need to know about the power in term of resistance and voltage.

Thus, we can conclude that the resistance is 9 Ohm.

Learn more about the electrical power here:

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Answer:

Electrons = 11

Explanation:

The amount of protons is = to the amount of electrons

Answer:

-622.155N

Explanation:

I'm not entirely sure what physics you're doing but uh alright.

Answer:

Newtons first law of motion explains what happens in a car crash because it basically states that the passenger will continue to travel at the same velocity until an unbalanced force acts on he or she. The force that will act upon he or she would be the window, so you should always wear a seat belt!

Explanation:

According to Newtons first law of motion, a passenger tends to continue in the state of uniform motion even after the accident which causes the passenger to move forward.

According to the Newtons first law of motion, an object will continue in a state of rest or uniform motion unless it is acted upon by an external force. This is also known as the law of inertia.

While in a car undergoing uniform motion and suddenly the car is involved in an accident which causes the vehicle stop abruptly, a person suddenly moves forward because of the tendency to continue in the former state of uniform motion according to Newtons first law.

A seat belt helps to prevent the person from suddenly moving forward in a way that may lead to injury as a result of the accident.

Learn more: https://brainly.com/question/974124

Answer:

The correct answer is B. a nucleus surrounded by electrons.

Answer:

1) The distance further it takes Peter to arrive at the Coffee shop than Mia is 1.24 km

2) Mia's average speed is 6.00 km/hour

Peter's average speed is 8.48 km/hour

4) Mia's average velocity = Peter's average velocity = 6.00 km/hour

Explanation:

The given information from the diagram are;

The distance Peter jogs from school to the flower shop = 2.00 km

The distance Peter jogs from the Flower shop to the Coffee shop = 2.24 km.

The distance Mia walks from school directly to the Coffee shop = 3.00 km

The time it takes both Peter and Mia to arrive at the coffee shop = 30 minutes = 0.5 hour

1) The total distance Peter travels from school to the Coffee shop = 2.00 km + 2.24 km = 4.24 km

The distance Mia travels from school to the Coffee shop = 3.00 km

The distance further it takes Peter to arrive at the Coffee shop than Mia = 4.24 km - 3.00 km = 1.24 km

The distance further it takes Peter to arrive at the Coffee shop than Mia = 1.24 km

2) [tex]Average \ speed = \dfrac{Total \ distance \ traveled}{Total \ time \ taken \ in \ the \ journey}[/tex]

[tex]Therefore, \ Mia's \ average \ speed = \dfrac{3.00 \ km}{0.5 \ hour}= 6.00 \ km/hour[/tex]

Mia's average speed = 6.00 km/hour

[tex]Peter's \ average \ speed = \dfrac{4.24 \ km}{0.5 \ hour}= 8.48 \ km/hour[/tex]

Peter's average speed = 8.48 km/hour

4) [tex]Average \ velocicty = \dfrac{Displacement }{Time \ taken}[/tex]

The displacement from the School to the Coffee shop is 3.00 km for both Mia and Peter

The time it takes both Peter and Mia to arrive at the Coffee shop from the school is 30 minutes = 0.5 hour

[tex]Therefore, \ Mia's \ average \ velocity = \dfrac{3.00 \ km}{0.5 \ hour}= 6.00 \ km/hour[/tex]

Mia's average velocity = 6.00 km/hour

[tex]Peter's \ average \ velocity = \dfrac{3.00 \ km}{0.5 \ hour}= 6.00 \ km/hour[/tex]

Therefore, Peter's average velocity is also = 6.00 km/hour

it absorbs all ligj colour except black

Answer:

s orbital

Explanation:

that the answer

Answer:

B

Explanation:

Answer:

call the police, or scream on the top of ur lungs. and fight for ur life.

Explanation:

Answer:

Try to put your finger prints over EVERYTHING and try to remember EVERY SURROUNDING YOU SEE, try to put strands of your hair all over wherever you are. Try to poison whoever kidnaped you (ik kind of far but STILL). Just please if you actually ARE being kidnapped, SCREAM AND RUN JUST RUN AS FAST AS YOU CAN IF U AREN'T TIED UP OR WHATEVER. :(

Answer:

The magnets are in the outer part not the middle

Explanation:

i know

The acceleration of an object is directly related to the net force exerted upon it and inversely related to the mass of the object.

answer : directly , inversely

Answer:

a. 24 kg m/s

b.  3/5s

Explanation:

a.impulse is the change in momentum so at first the momentum is zero because the ball was at rest and the final momentum is 1.2kg*20m/s=24 kg m/s

so the impulse would be (24-0) kg m/s=24 kg m/s

b. so the impulse equation is impulse is force *delts time

so 24 kg m/s=40N*t

t=24 kg m/s /40N=3/5 s

Answer:

2K + CI2 (arrow) = 2KCI

Explanation:

ZZZZZZZZZ

Answer:

An object's acceleration depends on its mass and on the net force acting on it.

Explanation:

Newton's second law states that the acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass.

Answer:

3.An object's acceleration depends on its mass and on the net force acting on it.

Answer:

Option C, a pan heated to 100°C

Explanation:

The pan on the burner will be in direct contact of the heat released by burner and hence the pan will receive the direct flow of heat from the burner.

However, the water is the pan will be heated by the heat transferred from the pan to the water in it. Water will not receive heat directly from the burner.

Hence, option C is correct

Answer:

Explanation:

I have proof that it it most likely right with a side of memes.