help!!
A. 0.5 s
B. 1.0 s
C. 1.5 s
D. 2.0 s

Answer: C. electricity and magnetism  

Explanation:

Answer:

B.

electricity and magnetism

is the ans

I find this in physics

Answer:

The kinetic energy before the collision was 8 J

Explanation:

The given parameters are;

The mass of the metal ball at rest, m₁ = 3.0 kg

The velocity of the ball at rest = 0 m/s

The mass of the metal ball that hits the one at rest, m₂ = 1.0 kg

The velocity of the metal ball that hits the one at rest, v₂ = 4.0 m/s

The velocity with which the 3.0 kg ball moves forward = 2.0 m/s

The velocity with which the 1.0 kg ball bounces back = 2.0 m/s

a) Kinetic energy, K.E. = 1/2 × m × v²

Where;

m = The mass of the of the object in motion

v = The velocity of the object

Before the collision, we have;

Initial K.E. = 1/2 × m₁ × v₁² + 1/2 × m₂ × v₂²

∴ Initial K.E. = 1/2 × 3.0 kg × (0 m/s)² + 1/2 × 1.0 kg × (4.0 m/s) ² = 8 J

The kinetic energy before the collision = The initial K.E. = 8 J.

Answer:

weight of the person and reaction force according to that weight by the elevator

every action has an equal and opposite reaction

Weight of the person and reaction force according to that weight by the elevator is balanced.

According to the third law, when two objects interact, they exert equal-sized and opposite-direction forces upon one another.

A person rides in an elivator then the equal and opposite force for the force of the elevator floor pushing up on the person as described by Newton’s third law and are balanced.

Weight of the person and reaction force according to that weight by the elevator is balanced.

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Answer:

increases the voltage output

Explanation:

By Increasing the number of turns on the generator coil , the output volatge of a generator increases. However, there are various other methods availbble to increase the output voltage of a generator. Some of these can be

1. By increasing the rpm of generator coil.

2. By using stronger magnets

Answer:

Power = 1200 [W].

Explanation:

The efficiency of an electrical equipment is defined as the relationship between the power realized, over the power that is consumed. For this case, they give us the data of consumed power and efficiency in this way we can calculate the power that the equipment performs.

[tex]Efficency=\frac{Power_{done}}{P_{consumed}}\\0.8 = \frac{Power_{done}}{1500} \\Power_{done}=1500*0.8\\Power_{done} = 1200 [W][/tex]

This means that of the 1500 [W], 1200 [W] are actually used to get the job done. This is established by means of the first law of thermodynamics.

Answer:

F = 1200 [N]

Explanation:

Torque is defined as the product of force by Radius.

[tex]T=F*r[/tex]

where:

T = torque = 300 [N*m]

r = radius = 50/2 = 25 [cm] = 0.25 [m]

[tex]F=T/r\\F = 300/0.25\\F = 1200 [N][/tex]

Answer:

4kPa

Explanation:

P = force/area

= 400/(0.5×0.2)

= 4000Pa(4kPa)

Answer:

4000pascal

Explanation:preassure = force/area

F = 400N

A = 50cmx 20cm = 1000 cm sq

so we have to convert the area in metre square

so when convert we get the answer 1/10 = 0.1m square

now as per the equation of preassure we have to divide 0.1/400

and then we get the answer 4000pascal.

Answer:

The magnitude and direction of the force on the charge is 120 N in the direction of the charge.

Explanation:

Given;

magnitude of the charge, q = 0.6 C

electric field strength, E = 200 N/C

The magnitude of the electric force is calculated as;

F = Eq

where;

F is the magnitude of the force

Substitute the given values and solve for F;

F = (200)(0.6)

F = 120 N in the direction of the charge.

Therefore, the magnitude and direction of the force on the charge is 120 N in the direction of the charge.

Answer:

0.4329 seconds

Explanation:

We are given;

Distance; d = 0.635 m

Velocity; v = 3.22 m/s

Angle; θ = 62.9°

To find the time, we have to find the horizontal component of the velocity.

Thus, Vx = 3.22 × cos 62.9

Formula for time is;

t = d/Vx

t = 0.635/(3.22 × cos 62.9)

t = 0.4329 sec

Thus the time he will take to clear the hurdle is 0.4329 sec

I HAVE ATTACHED A FILE..

Please find the attached photograph for your answer

Answer:

is it 3?

Explanation:

Im taking a guess and just dividing 6 and 2

Let r be the distance between the man and point Q. He applies a torque of

(r i ) × ((-800 N) j ) = ((-800 N) r ) k

pointing "into the page" with magnitude (800 N) r.

Meanwhile, the rope applies a torque of

((3.0 m) i ) × ((500 N) j ) = (1500 N•m) k

pointing out of the "page" with mag. 1500 N•m

The beam is held in place in a horizontal position, so the torques cancel and

(800 N) r = 1500 N•m

r = (1500 N•m)/(800 N) = 1.875 m ≈ 1.9 m

Answer:

Yet Yeet and Yeeeeeet

Explanation:

Answer:

Explanation:

Electromagnetic waves are formed by the interference of both electric and magnetic fields. These include: Microwaves, Radio waves, Infrared, Visible, Ultraviolet, X-ray, and gamma rays. These waves can be arranged in a specific order (called spectrum) with respect to their wavelength or frequency. The higher the wavelength, the lower the frequency. And vice versa.

These waves are transverse, and travels at the same speed (speed of light - 3.0 x [tex]10^{8}[/tex] m/s).

In the given question, the answers are:

1 - Magnetic

2 - Region

3 - Refractive indices

4 - Greater

5 - Higher

6 - Wavelength

Answer:

your pretty no matter what others say

Explanation:

Answer:

two bros chillin in a hot tub five feet apart cuz there not gay

Explanation:

do you remember this vine

Answer: 75 ft

Explanation:

Breaking distance = Speed²/ 20

= 30²/20

= 45 feet

Stopping distance = Speed + braking distance

= 30 + 45

= 75 ft

Answer:

zero

Explanation:

The linear momentum is conserved when the system is closed. Therefore, the net force is zero.

Answer:

D

Explanation:

The standard international (SI) unit for spring constant is N/m, so N/km is the same thing but bigger.

Answer:

I tried...

Explanation:

Assuming the English system of mass and weight is the same as the Imperial system, the measurements are:

• 1 pound (lb) = 16 ounces (oz)

• 2,000 pounds (lbs) = 1 ton (T)

I think that's everything?

In the English system, mass is measured in pounds and weight is also measured in pounds. However, it is important to understand the difference between mass and weight.

Mass is a measure of the amount of matter in an object and is a scalar quantity. It does not change with location or gravitational force. In the English system, mass is typically measured using a scale or balance, which compares the object's mass to a standard mass. The pound (lb.) is the unit of mass in the English system.

Weight, on the other hand, is a measure of the force exerted on an object due to gravity and is a vector quantity. It depends on the object's mass and the gravitational force acting on it. In the English system, weight is typically measured using a spring scale or a balance that incorporates a spring. The pound (lb.) is also used as the unit of weight in the English system.

Weight = Mass x Acceleration due to gravity

Mass is measured in pounds (lb.) and weight is also measured in pounds (lb.).It is important to note that weight can vary depending on the gravitational force acting on an object.

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Answer:

In the wild, clownfish rarely leave their anemone home. In fact, part of its purpose is to defend the anemone from other fish. However, clownfish bred in aquariums (without an anemone home) may still have this instinct, but it’s much calmer than wild harvested species.

Explanation:

Answer:

d = 1.022 [m]

Explanation:

Work in physics is defined as the product of force by distance. In this way we have the following expression.

[tex]W=F*d[/tex]

where:

W = work done = 180 [J] (units of Joules)

F = force = 176 [N]

d = distance [m]

[tex]d = W/F\\d = 180/176\\d = 1.022 [m][/tex]

Answer:

This is due to a relative decrease in atmospheric pressure in high places.

Explanation:

Given that atmospheric pressure decreases at the higher point or ground, this reduced atmospheric pressure, however, will be unable to contain the Mercury in the barometer tube.

Therefore, at the top of the mountain where the air pressure is low, the barometer reading ultimately goes down.

Hence, the level of mercury falls in a barometer while taking it to a mountain "due to a relative decrease in atmospheric pressure in high places."

Answer:

Without food your not able to produce energy thats why you cannot work so long

Answer:

The latent heat of vaporization of water is 2.4 kJ/g

Explanation:

The given readings are;

The first (mass) balance reading (of the water) in grams, m₁ = 581 g

The second (mass) balance reading (of the water) in grams, m₂ = 526 g

The first joulemeter reading in kilojoules (kJ), Q₁ = 195 kJ

The second joulemeter reading in kilojoules (kJ), Q₂ = 327 kJ

The latent heat of vaporization = The heat required to evaporate a given mass water at constant temperature

Based on the measurements, we have;

The latent heat of vaporization = ΔQ/Δm

∴ The latent heat of vaporization of water = (327 kJ - 195 kJ)/(581 g - 526 g) = 2.4 kJ/g

The latent heat of vaporization of water = 2.4 kJ/g

Answer:

The answer is "DACB".

Explanation:

The missing data of the question is defined in the attached file please find it.

Using formula:

[tex]\to F= m \cdot a\\\\ \to m= 5 \ kg[/tex]

In object A:

[tex]F= 15 \\\\a =\frac{F}{m} = \frac{15}{5} = 3[/tex]

In object B:

[tex]F= 30 \\\\a =\frac{F}{m} = \frac{30}{5} = 6[/tex]

In object C:

[tex]F= 20 \\\\a =\frac{F}{m} = \frac{20}{5} = 4[/tex]

In object D:

[tex]F= 0 \\\\a =\frac{F}{m} = \frac{0}{5} = 30[/tex]

That's why the answer is "DACB" .

Answer:

it is applicable on all bodies having mass and the bodies Will be governed by the same law

Answer:

Organs are made of collections of tissues, which are groups of cells.

Explanation:

Answer:

B. Arc blast

Explanation:

Arc blast are as a result of rapid injection of electrical energy into an arc. These shock waves and arc blast pressure wave at low level can lead to damage of eardrums at lower levels and cardiac arrest at high levels.

Strong magnetic fields created by high currents (> 100 kA) can result to equipment destruction. These arc blast hazards are mostly found in high-energy power circuits and large capacitor banks.

Answer: 2

Explanation:

From the question, we are informed that the distance of a force arm (FA) is 4 feet and the resistance arm (RA) is 2 feet.

Based on the information given, the mechanical advantage would be calculated as:

= Force Arm / Resistance Arm

= 4 feet / 2 feet

= 2