Which language has the most native speakers?
a.
Spanish
b.
Hindi
c.
Mandarin
d.
English



Please select the best answer from the choices provided


A
B
C
D

Answer:

1.825m/s

Explanation:

Using the law of conservation of momentum which says that momentum before collision is equal to sum of momentum after collision.

m1u1+m2u2 = (m1+m2)v

m1 and m2 are the masses

u1 and u2 are the initial velocities

v is final velocity of the two bodies after collision

Substitute the given parameters into the formula

55(2.5)+45(1) = (55+45)v

137.5+45 = 100v

182.5 = 100v

v = 182.5/100

v = 1.825m/s

Hence their final speed is 1.825m/s

AnswerThe current through a toaster connected to a 120-V source is 8.0 A. What power is given off by the toaster? p= 8.0 A : 120V (p=960 W Page 2 7. The resistance of an electric stove eleinent at operating temperature is 11 12.

Explanation:

hope this helps =)

Hello!!

For calculate the resistance of the toaster, we have to applicate formula:

[tex]\boxed{R= V^{2}/P}[/tex]

[tex]\textbf{Being:}[/tex]

[tex]\sqrt{}[/tex] [tex]P = Potency \ power = 1500 \ W[/tex]

[tex]\sqrt{}[/tex] [tex]V = Voltage = 120 \ V[/tex]

[tex]\sqrt{}[/tex] [tex]R = Resistance = \ ?[/tex]

[tex]\text{Then let's \textbf{replace it according} we information:}[/tex]

[tex]R = (120 \ V)^{2} / 1500 \ W[/tex]

[tex]R = 9.6 \ \varOmega[/tex]

[tex]\textbf{Result:}\\\text{The power of the toaster is \textbf{9.6 Ohms}}[/tex]

Answer:

m = 5.22 kg

Explanation:

The force acting on the bucket is 52.2 N.

We need to find the mass of the bucket.

The force acting on the bucket is given by :

F = mg

g is acceleration due to gravity

m is mass

[tex]m=\dfrac{F}{g}\\\\m=\dfrac{52.2}{10}\\\\=5.22\ kg[/tex]

So, the mass of the bucket is 5.22 kg.

Answer:

chemical

Explanation:

it's chemical

Hello!

Use the formula:

W = Fd

Replacing:

W = 300 N * 300 m

Resolving:

W = 90000 J

The work is 90000 Joules.

Answer:

1

Explanation:

What you have to do here to get your answer is you have to divide because you are looking for acceleration.You have to divide 300 from 300 and your answer is 1.

F=300N

M=300m

A=1

Hope this helps:)

Mark brainlist pls

Answer:

5  seconds

Explanation:

Rock A is thrown horizontally off a cliff with a velocity of 15 m/s. The rock lands 75m from the base of the cliff, According to the above information the time spend by the rock will be "5 s".

To find the time given values are:

Initial horizontal velocity, u = 15 m/s

Horizontal Length, R = 75 m

The range of a projectile can be defined as the distance horizontally that projectile which travels with the time and then it is launched for the time and also it comes back down to the same height to the height of where it is launched. According to a projectile motion, there will be no horizontal acceleration at work.

The range of projectile will be:

R=υt

t = R /υ

By substituting the values,

t = 75 /15

t = 5 sec

Rock A is thrown horizontally off a cliff with a velocity of 15 m/s. The rock lands 75m from the base of the cliff, According to the above information the time spend by the rock will be "5 s".

Learn more about projectile motion,

https://brainly.com/question/14896559

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Answer:

(v2² - v1²)/(2x) = (7.5² - 5.0²)/(2*50) = 0.3125 m/s²

The acceleration of the boat is 0.16 m/s².

We have a boat.

We have determine the boat's acceleration.

The rate of change of velocity with time is called Acceleration.

a = dx/dt

According to the question -

Initial velocity (u) = 5m/s

Final velocity (v) = 7.5m/s

Distance (d) = 50 m.

Now -

v²- u² = 2aS

(v + u)(v - u) = 2aS

12.5 x 2.5 = 200 a

a = 0.16 m/s².

Therefore, the acceleration of the boat is 0.16 m/s².

To solve more questions on Kinematics, visit the link below-

brainly.com/question/4203900

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Answer: A

Explanation: because it is

A Bone yanked on the kid against his will. Newton's third law states that every action has an equal and opposite reaction.

To learn more about Newton's law refer to:

https://brainly.com/question/25545050

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Answer:

I believe its san andreas fault because its a fault

Explanation:

Answer:

The Mid-Atlantic Ridge

Answer:

The materials with which the lab group are to use for the model includes;

i) A candle

ii) A match

iii) A strip of cloth

iv) Tongs

v) A metal can

The processes the lab group are to model are;

a) Conduction

b) Convection

c) Radiation

The procedure the lab group can use to do this is outlined as follows;

1) Tie the piece of cloth around the metal can with a strip of the cloth extending past the bottom of the can

2) Hold the metal can in with the aid of the tongs

3) Light the candle with the match

4) Place the metal can over over the burning candle so that it does not touch the flame

5) While holding the can with the tongs, ensure that the strip of cloth hanging by the side of the can does not come in contact with the flame

Conduction

Conduction heat transfer is observed by the rising temperature of the tongs that is in the contact with the can

Convection

Convection heat transfer is observed by the rising temperature of the can that is placed in the path of the rising convection current from the candle wax

Radiation

Radiation heat transfer is observed by the shrinking of the piece of cloth placed beside the candle flame

Explanation:

Hello!

[tex]\large\boxed{\text{0 Joules}}[/tex]

Recall that gravitational potential energy is equal to mgh, or the product of mass, gravity and height.

It is given that the track is flat, which means that there is no change in height. Because of this, we can set h = 0:

PE = m · g· (0)

PE = 0 J

Answer:

Should be perpendicular

The name that is given to the shortest distance that exists between a line of action of a force and the pivot is the perpendicular distance.

It should be noted that the perpendicular distance refers to the distance from one point to another that exists between two objects.

The perpendicular distance is known as the shortest distance that's between a point and a line. When there are two distinct lines that intersect each other at 90°, the lines are perpendicular lines.

Read related link on:

https://brainly.com/question/19773505

Answer:

1250

Explanation:

Answer:number fourExplanation:

Answer:

True

Explanation:

an object in motion stays in motion unless acted upon by another force

Answer/Explanation:

True. A force is what causes a movement in the first place. In order for an object to change motion a different force must be applied such as its opposing force.

Natural force: Thrust

Opposing force is drag.

Other forces are gravity and lift.

The opposing force will reverse the motions direction, the other forces will just change the direction without reversing.

Answer:

C

Explanation:

Which wavelength of the electromagnetic spectrum are shorter than visible light and carry more energy

A micro

B radio

C ultraviolet

F infrared

The correct answer is C

The visible light wavelength is of 7 × 10^-7 m while the ultraviolet is of other

4 × 10^-8 m

Therefore, ultravolet is shorter than visible light and carry more energy

Therefore, the correct answer is option C.

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 66 × 2

We have the final answer as

Hope this helps you

Answer:

The air over the ocean is now warmer than the air over the land. The land loses heat quickly after the sun goes down and the air above it cools too. This causes a small temperature gradient between the ocean surface and the nearby land at night and the wind will blow from the land to the ocean creating the land breeze.

Explanation:

Answer:

7.402%

Explanation:

Given that the total electrical energy used by the bulb in every second is 66.2 J.

The useful energy converted to light energy is 4.9 J.

As efficiancy (in %) = (Useful energy)/(Total energy) x 100

So, the efficiency of the bulb = (4.9/66.2)x100=7.402%

Hence, the efficiency of the bulb is 7.402%.

if for a force of 0.5 N we have a displacement of -0.02m we can calculate the elastic constant(k) with the formula F=-kx(F=0.5N x=-0.02)

k=F/x k=0.5/0.02=25N/m

now we can calculate the period by the formula

T=2π√(m/k)

in the mass we convert grams to kilograms so 100g=0.1kg

T=6.28√(0.1/25)⇒T=0.39seconds

Answer:

For this applicate 2nd Law of Newton:

F = ma

Replacing:

30 N = m * 3 m/s^2

30 N / 3 m/s^2 = m

10 kg = m

The mass is of 10 kilograms.

Answer:

yesn't

Explanation:

Answer:

v = -5 m/s

Explanation:

It is given that,

The initial velocity of the ball, u = 25 m/s

We need to find its velocity after 2 seconds in the air.

Let v is the velocity of the ball after 2 seconds. Using equation of motion to find it.

v = u + at

Here, a = -g

v = u -gt

Putting all the values,

v = 25 - (10)(3)

= 25-30

= -5 m/s

So, the velocity of the ball after 3 seconds is 5 m/s and it is in downward direction.

Answer:

Earth revolving once around the Sun

Explanation:

The Earth is one of the planets that make up the Solar system. The earth undergoes two phenomena called "ROTATION" and "REVOLUTION". Rotation refers to the moving around of an object along its own axis while revolution refers to the moving of an object around another object.

The Earth rotates (along its axis) to produce the day and night (24 hours). However, the revolution of the Earth around the largest planetary body, which is the SUN, takes approximately 365 days to complete. Hence, the Earth's revolution around the sun produces the year (365 days).

Answer:

The net force is zero because both volleyball players are hitting the ball with same force.

Explanation:

Answer:

6

Explanation:

because 6 is along the number line line x2 and x1

Answer:

the law states that unbalanced forces cause objects to accelerate with an acceleration that is directly proportional to the net force and inversely proportional to the mass.

Explanation:

Answer:

Joe & Bo's car: 200.0 kg + 100.0 kg = 300.0 kg; Melinda's car: 25.0 kg + 100.0 kg = 125.0 kg

so the answer is 125.0kg

Given :

Volume of gas in 20°C is 50 cm³.

To Find :

The  new volume at 96°C.

Solution :

Let, us assume that the pressure is constant throughout the process.

We know, when pressure is constant volume is directly proportional to the temperature.

So, [tex]\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}[/tex]

Putting all values in above equation, we get :

[tex]\dfrac{50}{V_2}=\dfrac{273+20}{273 + 96}\\\\V_2 = 50\times \dfrac{369}{293}\ cm^3\\\\V_2 = 62.97\ cm^3[/tex]

Hence, this is the required solution.