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
matrenka [14]
3 years ago
9

A switch that connects a battery to a 30μf capacitor is closed. several seconds later you find that the capacitor plates are cha

rged to ±30μc. part a what is the emf of the battery?
Physics
1 answer:
Elanso [62]3 years ago
5 0
You can find the emf of the battery by using:

Q = CV.

Q = Charge in capacitor plates = 30μC
C = Capacitance of the capacitor = 30μF

V = Q/C = 30/30 = 1V

Ans: The emf of the battery = 1V.
You might be interested in
An apple has a density of 641 kg/m3. Water has a
Vlad [161]

Answer:

D

Explanation:

Since the apple is 641kg/m3 and water is 1000kg/m3 then the apple will float. Light materials float on top of the water similar to how oil is always on top of the water layer. Since the two are close so the apple will partially float

6 0
3 years ago
The mass of the rock is 1220 kg. It had 400 J of potential energy when it rolled down the hill. calculate the heihht.
Sauron [17]

potential is equal to mgh

we know that mass = 1220 kg

g=9.8 0r 10

400=1220*9.8*x

400=11956x

x=400/11956

5 0
3 years ago
Read 2 more answers
If two variables have a non-related relationship and one of the variables is changed, how will the other variable change?
PolarNik [594]

If one of the variables is changed, that tells nothing about what happens to the other one, or IF anything happens, or when, or how long it lasts. Because they are UN-RELATED. You just said so yourself.

None of the choices says this.

6 0
3 years ago
Which type of friction requires the use of extra for such a start the motion of stationary objects?
anzhelika [568]
A) Static, hope it helps
6 0
3 years ago
14. The real risk-free rate of interest is 2%. Inflation is expected to be 3.5% the next 2 years and 6% during the next 3 years
Naddika [18.5K]

Answer:

3-year = 6.33%

5-year = 7%

Explanation:

Yield in security = Risk free rate + Maturity risk premium + Inflation premium + Liquidity premium + Default risk premium

Maturity risk premium is given as 0

Yield on 3-year treasury securities is 2 + [(3.5 + 3.5 + 6) / 3] + 0

= 6.33%

Yield on 5-year treasury securities is 2 + [(3.5 + 3.5 + 6 + 6 + 6) / 5] + 0

=7%

5 0
4 years ago
Other questions:
  • An athlete of mass 70.0 kg applies a force of 500 N to a 30.0 kg luge, which is initially at rest, over a period of 5.00 s befor
    6·1 answer
  • Imagine a car moving at a speed of 10 m/s it starts speeding up at an acceleration of 2 m/s/s. What will the car's speed be afte
    12·1 answer
  • A man with a mass of 60 kg walks up two flights of stairs in going from the first floor to the third floor (10 meters). Calculat
    7·1 answer
  • As light from air to water to glass, it will refract. The best explanation for this would be
    14·2 answers
  • An airplane travels at a speed of 300 km/h for 2 hours, speeds up to 400 km/h for the next hour and then travels the final four
    13·1 answer
  • Turner’s treadmill starts with a velocity of −3.0 m/s and speeds up at regular intervals during a half-hour workout.After 33 min
    9·1 answer
  • A dog pulls on a leash with a force of 15 23 is a big dog. The leash makes an angle of 36.7 degrees to the horizontal. What are
    5·1 answer
  • A car accelerates at a constant rate from 0 m/s to 10.0 m/s for 5.00 seconds. What is the displacement?
    12·1 answer
  • Is this d or not? Pls helppppp
    5·2 answers
  • What experimental evidence led to the development of this atomic model from the one before it?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!