PHYSICS HIGH SCHOOL

which of the following is an example of a concave mirror? surveillance mirror car side mirror reflecting telescope microscopes

Answers

Answer 1

Answer:

Answer:

Reflecting telescope

Explanation:

A concave mirror is used to concentrate the light falling on it.

A concave mirror of large focal length acts as a reflecting type telescope.

As the rays of light coming from distant object falls on it, then after reflection the rays concentrate at the focus of the concave mirror and then we see the clear image of the distant object.

Answer 2

Answer:

Reflecting telescopes

Related Questions

Which is the correct scientific notation for 724000000000
The atoms in a solid move about freely
The type of radiation that will penetrate farthest into a material isA. a beta ray. B. a gamma ray. C. an X-ray. D. an alpha ray. E. They all penetrate material the same distance
What is the fundamental frequency of a particular medium?. a.the lowest frequency at which a standing wave is possible. b. the highest frequency at which s standing wave is possible
How would you calculate the number of neutrons in this isotope?

All nuclear energy results in the rapid release of energy, such as in atomic bombs. a. True
b. False

Answers

It is true that all nuclear energy results inthe rapid release of energy, such as in atomic bombs. A process wherein the atom’s nucleusis further divided into two nuclei, that is, fission products, is callednuclear fission. This happens when the nuclei of radioactive elements (e.g.Uranium or Plutonium isotopes) are able to attract neutrons. Because theseisotopes’ nuclei are unstable, an addition to their energy causes them todivide into new pieces of neutron. In nuclear reactors, fission occurs when thepower plant gathers heat from a steam in a physical process. Nuclear reactorsare designed to sustain nuclear chain reactions.

Answer:

FALSE

Explanation:

verified answer***

Nuclear energy is released from an atom through one of two processes: nuclear fusion or nuclear fission. In nuclear fusion, energy is released when the nuclei of atoms are combined or fused together. But isn't rapidly release

Force = 65 kg x 3 m/s =What is the answer?

What units do you use for your end result?

Answers

Answer:

multiply 65kg and 3m/s^2

to get 195kgm/s

or 195N

wait is that 3m/s or 3m/s^2?

A wave with a wavelength of 15 m travels at 330 m/s. Calculate its frequency.

Answers

Given the value of wavelength and speed at which the wave travels, the frequecy of the wave is 20 Hertz.

What is Wavelength?

Wavelength is simply the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.

From the wavelength, frequency and speed relation;

λ = v ÷ f

Where λ is wavelength, v is velocity/speed and f is frequency.

Given the data in the question;

Wavelength λ = 15m
Speed of the wave v = 300m/s
Frequency f = ?

To determine the frequency of the wave, we substitute our given values into the expression above.

λ = v ÷ f

f = v ÷ λ

f = 300m/s ÷ 15m

f = 20s⁻¹

f = 20Hz

Given the value of wavelength and speed at which the wave travels, the frequecy of the wave is 20 Hertz.

Learn more about Speed, Frequency and Wavelength here: brainly.com/question/27120701

${ \boxed {\red {\boxed {\green {\boxed {\blue {\boxed{ \bold{frequency = (velocity(v))/(wavelength(λ)) }}}}}}}}}$

$\mathsf{frequency = \frac{330ms {}^( - 1) }{15m} }$

$\purple{ \sf{frequency \: = \: 22m {}^( - 2) } {s}^( - 1) }$

The distance from Earth to the Sun is 1.0 _____. light year parsec astronomical unit furlong

Answers

The correct answer is the 3rd option. The distance from Earth to the sun is called the astronomical unit. It is a unit of length symbolized as "au". The distance is defined as exactly 149597870700 meters. It is also used as a fundamental component in another unit called the parsec.

Answer:

Explanation:

An unbalanced force of 40. newtons keeps a5.0-kilogram object traveling in a circle of radius
2.0 meters. What is the speed of the object?
(1) 8.0 m/s (3) 16 m/s
(2) 2.0 m/s (4) 4.0 m/s

Answers

This can be answered using the formula of centripetal force. In the given problem, the centripetal force (40 N), mass (5 kg), radius (2 m) are all named, except for the speed. The formula is shown below:

F = mv^2 / r

Substituting the given values:

40 N = 5kg(v^2) / 2
80 = 5 * v^2
v^2 = 16
v = 4

Therefore, the correct answer is 4.0 m/s (4).

When measuring current, always place the meter ina. series with the circuit.
c. the highest DC volts position.
b. the highest AC volts position.
d. parallel with the circuit.

Answers

d. parallel with the circuit

Other Questions

IN a physics lab, a student discovers that the magnitude of the magnetic field at a certain distance from a long wire is 4.0μT. If the wire carries a current of 5.0 A, what is the distance of the magnetic field from the wire?

What do we mean by the main-sequence turnoff point of a star cluster, and what does it tell us? It is the spectral type of the hottest main sequence star in a star cluster, and it tells us the cluster's age. It is the point in a star cluster beyond which main sequence stars are not found, and it tells us the cluster's distance. It is the faintest and coldest main sequence star in a cluster, and it tells us the cluster's age. It is the mass of the most massive star in the star cluster, and it tells us the cluster's size.

A cheetah runs with a positive acceleration. What does this tell you about the velocity time graph for the cheetah?A. Graph negative slope B. graph positive slope C. Graph positive area D. Graph negative area

A roller coaster starts with a speed of 4.6 m/s at a point 49 m above the bottom of a dip.Neglecting friction, what will be the speed of the roller coaster at the top of the nextslope, which is 29 m above the bottom of the dip?