The diagrams at the right show the path of light as it passes from air into the three solids. What are the possibilities of the solids in A, B and C? Explain.

Answer:

Batteries are systems that store chemical energy and then release it as electrical energy when they are connected to a circuit. Batteries can be made from many materials, but they all share three main components: a metal anode, a metal cathode and an electrolyte between them. The electrolyte is an ionic solution that allows charge to flow through the system. When a load, such as a light bulb, is connected, an oxidation-reduction reaction occurs that releases electrons from the anode while the cathode gains electrons

Explanation:

Answer:

62.5 m

Explanation:

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Answer:

Fewer

Explanation

Just did it on edge

Based on the data provided in the line graph, one can predict there will likely be less or fewer visitors in December compared to October.

The graph between two physical quantities in which the curve is a straight line. The line may be going upwards or downwards.

The slope is defined as the ratio of change in quantity on y axis and the change in quantity on x axis.

Slope is represented as

m = Δy / Δx

Given is graph(attached below) between the number of visitors and months. The graph is having positive slope till August and then after that slope is negative till December.

Positive slope means the change in quantity on y axis is increasing and negative slope is change in quantity on y axis is decreasing

When the number of visitors are compared, December month has less visitors than in the October month.

Thus, Based on the data provided in the line graph, one can predict there will likely be less or fewer visitors in December compared to October.

Learn more about line graph

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Answer:

The force of gravity between the Earth and the school bus is more on a school day than on a weekend

Explanation:

The force of gravity, F, is the attractive force that holds objects in place on the Earth's surface

The force of gravity attracting the bus of mass m to the Earth of mass M having a radius of [tex]R_{Earth}[/tex], can be presented by the following equation;

[tex]F = \dfrac{G \times M \times m}{(R_{Earth})^2}[/tex]

Which shows that the force increases as the mass of the bus increases

Since the school bus mass on a school day when carrying Pupils is mare than the mass of the bus in the weekend when the bus is empty, the force of gravity between the Earth and the school bus is more on a school day than on a weekend.

Answer:

due to the inertia of motion, the fan continues to move for some time even after switching it off.

Answer:

A fan has a property to follow it's circular motion even when the power supply is cut. A moving fan continues to move for a while even after switched off.

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Answer:

Option A

The electrons move, giving the object a static charge

Explanation:

When a neutral object is charged by conduction, it simply means that it is made to acquire a charges from another charged body, which is brought in contact with it.

When this happens, the electrons from a conductor, move into the neutral object giving it a static charge which is equal in polarity with the charge of the original conductor which was used to touch it.

Answer:

the answer is a

Explanation:

i just took a test and got this question right

Answer:

the first one

Explanation:

Answer:

Light travels at the same speed even if the light source is moving.

Explanation:

I took the test, hope this helps :)

Answer:

the degree of compactness of a substance.

Explanation:

The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: where ρ is the density, m is the mass, and V is the volume. Wikipedia

Answer:

The quantity of mass per unit volume of a substance

Explanation:

Answer:

Length of hole (s) = 362.77 m (Approx)

Explanation:

Given:

Time taken to hit the bottom (t) = 8.6 s

Acceleration due to gravity (g) = 9.81 m/s²

Find:

Length of hole (s) = ?

Computation:

Initial velocity (u) = 0 m/s

S = ut +1/2(gt²)

S = (0)(8.6) +1/2(9.81)(8.6)(8.6)

S = 1/2(9.81)(8.6)(8.6)

S = 1/2(9.81)(8.6)(8.6)

S = 362.7738

Length of hole (s) = 362.77 m (Approx)

Answer:

the amplitude

Explanation:

the maximum distance at which the object gets displaced from its mean position is know as the amplitude. the straight indicates the mean position and 'a' is the maximum height at which the object is displaced.

write abt gobal warmingExplanation:

Answer:

0.15m

Explanation:

Given the following :

angular diameter = 22 arc seconds

Distance = 1400 m

The linear diameter(D) could be calculated using the small angle formular :

Where ;

D = (angular size × distance) / 1 radian

Note :

1 radian = 360°/2pi = 360/(2 × 3.14) = 57.296°

1° = 3600 arc seconds

57.296° × 3600 = 206265.6

Therefore,

D = (22 × 1400) / 206,265.6

D = 30800 / 206,265.6

D = 0.1493220

Answer:

13 ms-1

Explanation:

Answer:

SE RESUELVE CON LA ECUACIÓN DE GALILEO GALILEI

Explanation:

v = 3 m/s + [tex]2 m/s^{2}[/tex](5 s) = 13 m/s

Answer:

Nuclear Fusion

Explanation:

Nuclear fusion is the nuclear reaction in which two lighter nucleus combine to form a larger more stable nucleus with the release of energy.

²₁H + ¹₁H ⇒ ³₂He + energy

In this case, a hydrogen atom reacts with a deuterium atom to produce a helium atom and energy.

Since two smaller atoms combine to produce a larger atom, nuclear fusion occurs.

Answer:

Fusion

Explanation:

Fusion but nuclear fusion is right but only fusion for APE X is needed

Answer:

Hence, option (A) is correct answer.

Explanation:

Answer:

When we burn wood we are releasing solar energy, in the form of heat, that has been stored in the wood as chemical energy. The process of photosynthesis converted solar energy, water and carbon dioxide into oxygen and the organic molecules that form the wood, half the weight of which is carbon.

Explanation:

Answer:

Mass: Beam balance

Weight: Beam balance

Length: Ruler

Time: Clock

Density of liquid: Hydrometer

Answer:

12volts

Explanation:

The potential difference between 4ohm resistor is 12volts because equal voltage is dropped in both resistor.

The picture clearly shows that the 4Ω resistor is connected directly to both terminals of the battery. If you connect a voltmeter to the ends of the resistor, the voltmeter is connected directly to the battery terminals. So the potential difference across the 4Ω resistor IS the potential difference across the battery . . . 12 volts.

As long as the battery is fresh enough to supply all the current that both resistors want, the 4Ω resistor doesn't even know that the 2Ω resistor is there. (And the feeling is mutual.)

Answer:

geocentric

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Explanation:

Answer:

1. It takes more force to push the door near hinges compared to pushing the door far from the hinges.

2.The turning effect of the force is called moment.

3.moment(Nm)=force(N)*distance from pivot(m)

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Answer:

According to the law of conservation of momentum:

Momentum of the car and insect system before collision = Momentum of the car and insect

system after collision

Hence, the change in momentum of the car and insect system is zero.

The insect gets stuck on the windscreen. This means that the direction of the insect is

reversed. As a result, the velocity of the insect changes to a great amount. On the other hand,

the car continues moving with a constant velocity. Hence, Kiran’s suggestion that the insect

suffers a greater change in momentum as compared to the car is correct. The momentum of

the insect after collision becomes very high because the car is moving at a high speed.

Therefore, the momentum gained by the insect is equal to the momentum lost by the car.

Akhtar made a correct conclusion because the mass of the car is very large as compared to

the mass of the insect.

Rahul gave a correct explanation as both the car and the insect experienced equal forces

caused by the Newton’s action-reaction law. But, he made an incorrect statement as the

system suffers a change in momentum because the momentum before the collision is equal to

the momentum after the collision.

Answer:

4.5 kg

Explanation:

Since weight, W = mg where m = mass and g = gravity acceleration = 10 N/kg and W = 45 N

m = W/g

= 45 N/10 N/kg

= 4.5 kg

The mass of the block on the ship is thus 4.5 kg. Since mass is an intrinsic property of a substance and does not change with location, the mass of the block when it is brought to as space station surrounding the earth is also 4.5 kg.

Answer:

Atoms cannot be divided.

Explanation:

Answer:

The centripetal acceleration of car is 8 m/s².

Explanation:

Explanation:

We have,

Initial speed of a softball is 3.89 m/s

Deceleration of the ball is -1.44 m/s²

Distance covered by the ball is 4.8 m

It is required to find the time that the ball take when it slides. Let t is time. Using second equation of motion :

[tex]h=ut+\dfrac{1}{2}at^2[/tex]

Putting all the values we get :

[tex]4.8=3.89t+\dfrac{1}{2}(-1.44)t^2\\\\4.8=3.89t-0.72t^2\\\\t=1.9\ s \ \text{and}\ t=3.49\ s[/tex]

Answer:

4. All of the above

Explanation:

The purpose of striking the ball in a volleyball game:

From the serve you could state that you need to place the ball in motion.

When returning a shot of, you normally want to change the direction of the ball's motion.

During a dropshot, you purposely want to slow down the ball's motion.

The correct answer must be all of the above.

Answer:

The particles in oxygen and water are made up of more than one atom, so they have particles that are molecules.

Explanation:

Answer:

The answer is all colors

Explanation:

Answer:

R = 0.1 ohms

Explanation:

It is given that,

Voltage of the battery, V = 12.5 V

Current flowing in the car's starter, I = 125 A

We need to find the effective resistance of a car's starter. It can be calculated using Ohm's law. Let R is the resistance.

[tex]V=IR\\\\R=\dfrac{V}{I}\\\\R=\dfrac{12.5}{125}\\\\R=0.1\ \Omega[/tex]

So, the resistance of the car's starter is 0.1 ohms.