How does a real image differ from a virtual image?

Answers

Answer 1

Answer: Real image is formed when the rays of light after reflection or refraction actually meet at some point whereas a virtual image is formed when the rays of light after reflection or refraction appear to meet at a point

Answer 2

Answer:

Answer:

one contains datta that can take up hard drive or disc space weras a picture takes up space on walls or photo albums

Explanation:

Related Questions

The mass number of an atom is equal to ______.• the sum of electrons plus neutrons in the atom• the number of protons, neutrons, and electrons in an atom• the sum of the protons plus neutrons in the atom• the number of electrons times the mass of an electron
The period of a ball moving in a circle is doubled while the radius stays the same. What happens to the velocity of the ball?
Consider the car driving around a circular track. Once started, the driver maintains a speed of 45 m/h. Compare the driver's velocity with his acceleration in this case.A) The car is accelerating because it is changing direction but the velocity isconstant.B) The car is traveling at a constant rate of speed so it is not accelerating andthe velocity does not change.C) Acceleration is the change in velocity so the car is experiencing a changein velocity and it is accelerating.D) The car is traveling at a constant rate of speed so it is not accelerating butthe velocity changes because the direction the car travels is constantlychanging
Which type of energy transformation takes place in the light bulb
INFER: South Africa was once (colder/warmer)than it is today

Give 3 examples to show work being done.

Answers

In the Physics definition of 'work' :

-- Pick up a book from off the table.

-- Push a crate along the floor.

-- Roll a ball up a ramp.

-- Drop a rock off a cliff into the water.
(Gravity does the work in this one.)

1. Read the question

2. Try to solve the answer

3. Then write the answer down

Without water's hydrogen bonds, whichof the following would occur?
Select all that apply.
A
Water would be a gas at room temperature,
B
Water would boil at 100 degrees Celsius.
C
Water would form droplets.
D
ice would sink.

Answers

Answer:

A. Water would be a gas at room temperature, and

D. Ice would sink in water.

Explanation:

There are three types of intermolecular forces: London dispersion forces, dipole-dipole interactions, and hydrogen bonds. The relative strength of these forces depend on the size of the molecule. However, for small molecules like water (three atoms per molecule,) hydrogen bonds would be much stronger than the other two types of forces.

Without hydrogen bonds, water molecules would be held together only with dipole-dipole interactions and London dispersion forces. To get an idea of what that would be like, consider hydrochloric acid $\rm HCl$ .

$\rm HCl$ and water $\rm H_2O$ contain about the same number of electrons. The H-Cl bond in $\rm HCl$ is polar, which allows for dipole-dipole interactions. However, only H-O, H-F, and H-N bonds allow for hydrogen bonding. As a result, there won't be any hydrogen bonding between $\rm HCl$ molecules. Without hydrogen bonding, $\rm HCl$ boils at well below $\rm 0\; ^\circ C$ under standard pressure. It is a gas at room temperature under standard pressure. That's about the same as what water molecules would behave (physically) without any hydrogen bonds between them.

Also because of hydrogen bonding, the density of ice (solid $\rm H_2O$ ) is typically greater than that of water (liquid $\rm H_2O$ .) When compared to water in its liquid state, there are more hydrogen bondings between molecules of water in its solid state. The hydrogen bonds hold the molecules together to form a lattice. Because of this structure due to hydrogen bondings, the molecules are farther apart than they are in the liquid states. As a result, the density of ice is typically smaller than that of water. That would likely not be the case if there was no hydrogen bondings between water molecules.

Why do trains use steel wheels rather than rubber tires? A) Steel wheels provide more grip, making it easier to stop a train.B) Rubber tires don't provide enough friction to allow the train to move.
C) Steel wheels increase friction, thus making it easier to move the load.
D) Steel wheels reduce friction, thus requiring less force to move the load.

Answers

D) steel wheels reduce friction, thus requiring less force to move the load. Friction between rubber and steel would be greater than steel and steel. Friction creates heat, which represents a loss of energy (which has to come from somewhere else - likely from the kinetic energy of the train)

Steel wheels reduce friction, thus requiring less force to move the load.

Adam's dad takes the parkway to work. It takes him 45 minutes to travel from mile marker 145 where he enters the parkway to his exit at mile marker 98. What is his average speed?1. 62.7 mph

2. 47 mph

3. 1 mph

4. 193.3 mph

Answers

speed=distance/time

see his distance

distance is from 145 to 98
145-98=47 miles

time
60 mins per hour
45 mins =time
time=45/60 hours=0.75 hours

47 miles per 0.75 hours
47/0.75=62.6666666 mph

first one is option

A car accelerates at a rate of 3.0 m/s^2. If it’s initial speed is 8.0 m/s, how many seconds will it take the car to reach a final speed of 25.0 m/s? Please show work

Answers

vf= 25 m/s
vi= 8 m/s
a= 3.0 m/s^2
t=?
You can substitute these values into the big five kinematic equations.

vf=vi+at
25= 8+3t
3t=17
t=5.67 seconds

What is the zero error of this vernier caliper ???

Answers

I believe the answer is C. 0.14cm.
The zero error in vernier caliper is read by the distance by which the zero of the movable part of the scale is shifted from the zero of the cm ruler in the tool, which is the unmovable part of the tool. The movable part has a scale accuracy of 0.1 cm, while the other has a scale accuracy of 1 cm. And we always use the lowest scale, which is here the 0.1 scale which has greater accuracy with 10 times the 1 cm ruler, to find our errors.

Hope this helps!

Other Questions

Which describes Newton's law of universal gravitation?Gravitational force is directly proportional to the distance between objects.All objects repel all other objects.Gravitational force increases with distance.All objects attract all other objects.

a person pushing a stroller starts from rest, uniformly accelerating at a rate of 0.500 m/s2. What is the velocity of the stroller after it has traveled 4.75 m ?

Choose all the answers that apply. In pea plants, round seeds are dominant over wrinkled seeds. If two hybrids (Rr) are crossed: 50 percent will be Rr 25 percent will have round seeds 25 percent will have wrinkled seeds 1/4 will have round seeds 3/4 will have the same phenotype I REALLY NEED HELP PLEASE

Help?? How does the thermal energy of a swimming pool compare to the thermal energy of a lake at the same temperature? A. Thermal energy is the total potential energy of the particles in a substance. The lake is larger, so it contains more total particles than the swimming pool. The thermal energy of a lake is greater than a swimming pool because the lake is larger. B. Thermal energy is the total kinetic energy and potential energy of the particles in a substance. The lake is larger, so it contains more total particles than the swimming pool. The thermal energy of a lake is greater than a swimming pool because the lake is larger. C. Thermal energy is the total kinetic energy of the particles in a substance. The lake is more spread out, so it contains fewer total particles than the swimming pool. Therefore, the thermal energy of a lake is less than that of a swimming pool. D. Thermal energy is the total potential energy of the particles in a substance. The lake is more spread out, so it contains fewer total particles than the swimming pool. Therefore, the thermal energy of a lake is less than that of a swimming pool. i think it is B, but can someone help me if im correct or not?