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
Kobotan [32]
3 years ago
15

A hypothesis is a(n) ______________

Physics
1 answer:
marusya05 [52]3 years ago
6 0

Answer:

It is an educated guess

Explanation:

let me know if the bottom ones need to be answered too.

You might be interested in
You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching e
Degger [83]

Answer:

i) C decreases

ii) Q remains constant

iii) E remains constant

iv) ΔV increases

Explanation:

i)

We know, capacitance is given by:

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

\therefore C\propto \frac{1}{d}

<em>In this case as the distance between the plates increases the capacitance decreases while area and permittivity of free space remains constant.</em>

ii)

As the amount of charge has nothing to do with the plate separation in case of an open circuit hence the charge Q remains constant.

iii)

Electric field between the plates is given as:

E=\frac{\sigma}{\epsilon_0}

where:

charge density, \sigma=\frac{Q}{A}

<em>As we know that distance of plate separation cannot affect area of the plate. Charge Q and permittivity are also not affected by it, so E remains constant.</em>

iv)

  • From the basic definition of voltage we know that it is the work done per unit charge to move it through a distance.
  • Here we increase the distance so the work done per unit charge increases.
6 0
3 years ago
What are 3d glasses made of?
masha68 [24]
<span>a) two filters with vertical polarization
</span>
8 0
4 years ago
Read 2 more answers
Can someone help me with this please
andrezito [222]
Carbon: C, 12.011, 6, 12
Oxygen: O, 8, 8, 8, 16
Boron: B, 10.811, 5, 5, 11
3 0
3 years ago
A power plant has two types of transformers. The first type of transformer triples voltage and the second type of transformer re
Stella [2.4K]

Answer:

d . 6 times the secondary turns in the second type of transformer

Explanation:

In transformer , voltage is increased or decreased according to ratio of no of turns in secondary to no of turns in primary coil . The relation is as follows

V₂ / V₁ = n₂/n₁

n₁ and n₂ are no of turns in primary and secondary coil and V₁ and V₂ are voltage in primary and secondary coil.

for first type , Let no of turn in primary = n and no of turn in secondary = n₁

V₂ / V₁ = 3

so

n₁/n  = 3

n = n₁ /3

n₁ = 3n

For second type , let no of turn in secondary = n₂

V₂ / V₁ = .5

n₂/n = .5

n₂ = .5n

n₂ / n₁ = .5n / 3n

n₂ / n₁ = 1 / 6

n₁ = 6n₂

option d is correct .

7 0
3 years ago
A satellite revolves around a planet at an altitude equal to the radius of the planet. the force of gravitational interaction be
padilas [110]
Let
M = the mass of the planet
n = the mass of the satellite.
r = the radius of the planet

When the satellite is at a distance r from the surface of the planet, the distance between the centers of the two masses is 2r.
The gravitational force between them is
f_{0} = \frac{GMm}{(2r)^{2}} = \frac{1}{4} ( \frac{GMm}{r^{2}} )
where
G =  the gravitational constant.

When the satellite is on the surface of the planet, the distance between the two masses is r.
The gravitational force between them is
f_{4} =   \frac{GMm}{r^{2}} =4f_{0}

Answer:  f_{4} = 4f_{0}

5 0
4 years ago
Read 2 more answers
Other questions:
  • Which of the following statements about geothermal energy is not true? a. It is not a practical source of energy. b. It is an im
    6·2 answers
  • Suppose the universe contained only low-mass stars. Would elements heavier than carbon exist?
    6·1 answer
  • The force of gravity depends on the mass of objects and the distance between them. TRUE OR FALSE?
    10·1 answer
  • An oscillator consisting of a material point of m = 200g vibrates under the action of an elastic force according to the equation
    10·1 answer
  • What is the only type of water plants can use from the soil
    11·1 answer
  • You have to design a loop-the-loop for a new amusement park so that when each car passes the top of the loop inverted (upside-do
    12·1 answer
  • A conducting sphere contains positive charge distributed uniformly over its surface. Which statements about the potential due to
    6·1 answer
  • Help I don't understand!!
    11·1 answer
  • .........도움......<br>Is this correct? (the option is marked)​
    8·1 answer
  • What force (in N) must be applied to a 500.0 kg crate on a frictionless plane inclined at 30° to cause an acceleration of 5.0 m/
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!