1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ivanzaharov [21]
2 years ago
12

A virtual image formed by a concave mirror is always enlarged. O True O False

Physics
1 answer:
Dmitry [639]2 years ago
8 0

Answer:

True

Explanation:

A concave mirror produces real and inverted image when object placed at different locations beyond focus of the mirror.

A concave mirror produces virtual and erect and magnified image when an object placed between focus and the pole of the mirror.

You might be interested in
a 3,000kg truck runs into the rear of a 1000kg car that was stationary. The truck and car are locked together after the collisio
joja [24]
FVJDJFN.s<ldF KN,M c":F,BJ TNHIJRT IHJYODIFG 
7 0
3 years ago
A motorcycle running on gasoline wastes a large amount of energy mainly as A) heat energy and sound energy. B) light energy and
vlada-n [284]

A motorcycle mainly wastes energy as heat <u>energy</u> and <u>sound</u> energy. In the engine, chemical energy is transformed into mechanical energy. However, the engine is inefficient and much of the chemical energy is lost as heat energy. Also, some of the energy is transformed to sound energy. This explains why the motorcycle is noisy and has an exhaust pipe.

3 0
3 years ago
A parallel-plate air capacitor is made from two plates 0.210 m square, spaced 0.815 cm apart. it is connected to a 120 v battery
GuDViN [60]

Answer:

at the beginning: 2.3\cdot 10^{-10} F

when the plates are pulled apart: 1.1\cdot 10^{-10} F

Explanation:

The capacitance of a parallel-plate capacitor is given by

C=k \epsilon_0 \frac{A}{d}

where

k is the relative permittivity of the medium (for air, k=1, so we can omit it)

\epsilon_0 = 8.85\cdot 10^{-12} F/m is the permittivity of free space

A is the area of the plates of the capacitor

d is the separation between the plates

In this problem, we have:

A=0.210 m^2 is the area of the plates

d=0.815 cm=8.15\cdot 10^{-3} m is the separation between the plates at the beginning

Substituting into the formula, we find

C=(1)(8.85\cdot 10^{-12}F/m)\frac{0.210 m^2}{8.15\cdot 10^{-3} m}=2.3\cdot 10^{-10} F

Later, the plates are pulled apart to d=1.63 cm=0.0163 m, so the capacitance becomes

C=(1)(8.85\cdot 10^{-12}F/m)\frac{0.210 m^2}{0.0163 m}=1.1\cdot 10^{-10} F

4 0
3 years ago
For spring break you are traveling to San Diego. The trip is 1,746.4 miles and the trip takes 20.1 hours. How fast will you be t
postnew [5]

Answer:

86 mph

Explanation:

brainliest pls

7 0
2 years ago
which force field can accelerate an electron, but never change its speed? a) electric field b) magnetic field c) both of these d
Drupady [299]

Option a; Electric field can accelerate an electron, but never change its speed

An electric field (also known as an E-field) is a physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them. It can also refer to the physical field of a charged particle system. Electric fields are created by electric charges and time-varying electric currents. Electric and magnetic fields are both aspects of the electromagnetic field, one of nature's four fundamental interactions (also known as forces). Electric fields are significant in many areas of physics and are used in electrical technology. In atomic physics and chemistry, for example, the electric field is the attractive force that holds the atomic nucleus and electrons together in atoms. It is also the driving force behind chemical bonds between atoms.

Learn more about Electric field here:

brainly.com/question/15800304

#SPJ4

4 0
1 year ago
Other questions:
  • Find earth's approximate mass from the fact that the moon orbits earth in an average time of 27.3 days at an average distance of
    6·1 answer
  • How Many Days Would a Scientist Have To Wait For The Radioactivity To Be 12.5 The Starting Amount
    13·2 answers
  • 1 point
    8·1 answer
  • _____ is a property that determines how much current will flow for a given source voltage, whereas a _____ is a device that cont
    7·2 answers
  • A friend in your class tells you that she never uses hints when doing her Mastering homework. She says that she finds the hints
    12·1 answer
  • Explain how force (F=ma), momentum (p=mv), energy, and gravity play a part in a launching sequence.
    10·2 answers
  • How does the water cycle ensure that we have water?
    12·2 answers
  • Ethan drove a 1500 kg car around a circular track with a radius of 75 m. If the magnitude of the centripetal acceleration is 2 m
    11·1 answer
  • Which of the following best demonstrates Newton's Third Law?
    7·2 answers
  • An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!