Which vector has a y-component with a length of 3?
A. C
B. d
C. a
D. b

Answer : this pretty much gives you the answer Lol

Explanation:

Fundamentals. When the forces acting upon an object are balanced, the object will maintain its state of motion; that is, its velocity remains constant. If the forces are unbalanced, the object will either speed up or SLOW DOWN. ... And if an object is speeding up or slowing down, the forces are unbalanced.

Answer:

1 and 2>3 and 4=4 and 5 that is the answer

Answer:

0.4A.

Explanation:

Current (A) = Charge (coulomb)/Time (secs)

2 coulombs/5 secs = 0.4A

The total work done to move the lift to this height if, A lift that weighs 300 N moves a man with a weight of 950 N upwards by 12 m, is 15000 Joules.

When an object is moved over a distance by an external force, at least a portion of that force must be applied in the direction of the displacement. This is known as work in physics.

Given:

A lift that weighs 300 N moves a man with a weight of 950 N upwards by 12 m,

Calculate the total force as shown below,

Total force = Lift weight + man weight

Total force = 300 + 950

Total force = 1250 N

Calculate the work done as shown below,

The work done = Total force × displacement by total force

The work done = 1250 × 12

The work done = 15000 Joules

Thus, the total work done is 15000 joules.

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Answer:

Explanation:

mass of ship = volume x density

= 4000 x 7900 = 316 x 10⁵ kg

The ship must displace water equal to weight of ship that is 316 x 10⁵ kg .

If volume of displaced water be V .

V x 10³ is mass of displaced water

V x 10³ = 316 x 10⁵

V = 31600 m³.

b ) Now the volume of steel making ship is only 4000 m³ so if it is in the form of a lump , it will displace only water equal to its volume ie 4000 m³ . So in order that it may displace water equal to volume 31600 m³ , it must be given shape so that it is hollow .

Answer:since time goes to the right you look at the lines that are most pointed to the right with less distance so that would be B, A, D, C

Explanation:

Answer:

Given speed of light in diamond =1.24*10m/s

speed of light (c) =3*10^8m/s

refractive index of diamond =3*10^8/1.24*10=2.41*10^7m/s

Answer:

The area of the liquid surface does not affect the pressure.

Answer:

The equipment to use is: a beaker, a fixed amount of water, a thermometer.

The mass of water, the time, the temperature for each time should be noted and a graph of Temperature versus time should be made

Explanation:

The design of an experiment is to place the beaker in the microwave, with a good amount of water (approximately ⅔ of its capacity) and turn it on for small periods of time, generally the minimum is 30 s, quickly open the microwave, place a thermometer or better yet an infrared thermometer to measure the temperature of the water; repeat this several times.

The advantage of the infrared thermometer is that it reduces the transfer of heat between the water and the thermometer.

The mass of water, the time, the temperature for each time should be noted and a graph of Temperature versus time should be made.

The equipment to use is: a beaker, a fixed amount of water, a thermometer.

The main precaution that must be taken is not to open the microwave while it is on.

Answer:

Weight = 105 Newton

Explanation:

Given the following data;

Mass = 70kg

Force of gravity = 1.5N/kg

To find the weight;

Weight = mass * force of gravity

Substituting into the equation, we have;

Weight = 70 * 1.5

Weight = 105 Newton

Therefore, the weight of the astronaut when they are on the Moon is 105 Newton.

Answer:

The Sun transforms nuclear energy into heat and light energy.

Our bodies convert chemical energy in our food into mechanical energy for us to move.

An electric fan transforms electrical energy into kinetic energy.

Answer:

POGGGGGGGGGGGGGGG

Explanation:

Answer:

θ_c = 24.4º

Explanation:

To find the critical angle, let's use the law of refraction where index 1 refers to the incident medium (diamond) and index 2 refers to the medium where it is to be refracted (air)

          n₁ sin θ₁ = n₂ sin θ₂

for the critical angle the ray comes out refracted parallel to the surface, therefore the angle is

         θ₂ = 90

        n₁ sin θ₁ = n₂

        θ_c = θ₁ = sin⁻¹ [tex]\frac{n_2}{n_1}[/tex]

the index of refraction of the diamond is tabulated

       n₁ = 2.419

let's calculate

          θ_c = sin⁻¹ ([tex]\frac{1}{2.419}[/tex])

         θ_c = 24.4º

it's 1727 +822 just kidding

Answer:b

Explanation:

Because I don’t know

The circuit elements should be placed according to the diagram given in option B to cause the bulbs to dim but not to go out. Thus, the correct option is B.

An electric circuit is the continuous closed path along which the electric current flows from the positive terminal of the circuit to the negative terminal of the battery. An electric circuit can be constructed easily by joining all the elements of the circuit together in order.

The components of an electric circuit are:

A cell or a battery, which is the source of electricity.

The connecting wires which act as conductor to flow electric current.

A key or a switch to control the current through the circuit.

A bulb or electric device which act as a load to the circuit.

The length of the electric wire increases the resistance through the circuit and decreases the current flowing through the circuit which in turn dims the bulb.

Therefore, the correct option is B.

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Answer:

No. 2

Explanation:

The balanced nuclear reaction is shown by the following: ²³⁷₉₃ Np[tex]\rightarrow[/tex]⁴ ₂He +²³³₉₅ Am nuclear fission reaction.

There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.

In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.

In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.

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Answer:

The last one makes the most sense as they combine two like things that are easy to visualize

Explanation:

Answer:

C. The inner planets are like hard butterscotch candy and the outer planets are like cotton candy.

Explanation:

Right on ED2021, goodluck!

Answer:

D. sympathetic

Explanation:

Answer:

Momentum of red car = 5kgm/s

Momentum of blue car = 0kgm/s

Explanation:

Momentum = mass × velocity

For the red car

Mass = 1kg

Velocity = 5m/s

Momentum of the red car = 1kg × 5m/s

Momentum of the red car = 5kgm/s

For the blue car.

Mass = 1kg

Velocity = 0m/s(shows that the blue car is stationery)

Momentum = 1kg ×0m/s

Momentum of the blue car = 0kgm/s

Answer:

Silver

Explanation:

Silver would be the best conductor.

Answer:

silver

Explanation:

transition metal that has properties of a good conducfor.

activities you can do on a regular basis for physical education​?

If so

Answer:

Explanation:

2 min 20 sec = 140 sec .

In 40 sec  one round

In 140 sec 140 / 40 round = 3.5 round .

That means the boy will be positioned at the diametrically opposite corner of the square path .

side of square path = 15 m

length of diameter = 15√2

= 21.21 m

Displacement of boy is 21.21 m .

Answer:

The vibrations from sound waves cause our ears to send signals to our brains to create sound. The speed of sound waves will determine the sound's pitch, or how high or low something sounds. Sound waves are important because they allow us to hear important messages and emergency signals to protect ourselves.

Explanation:

I hope this helps :)

Explanation:

KE = 1/2mv^2

6,250 J =1/2(250kg) v ^2

6250 J = 125kgv^2

125kg. 125kg

v =

[tex] \sqrt{50} [/tex]

Answer:

dd

Explanation:

I dont know I dont know I dont know I dont know

Answer:

100 m/s^2

Explanation:

F=ma

50 g = 0.05 kg

5 = 0.05a

a=100m/s^2

Answer:

100MS

Explanation:

I did the test and got 100%