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
Wittaler [7]
2 years ago
13

Under which condition does Ohm's law apply? a. The current must be constant b. The power must be constant c. The temperature mus

t be constant d. The voltage must be constant
Physics
1 answer:
ruslelena [56]2 years ago
6 0

Answer:

option c

Explanation:

The temperature must be constant. Ohms law states that the current running through a conductor is directly proportional to the potential difference across it provided the temperature remains constant

You might be interested in
A certain spring stretches 3 cm when a load of 15 n is suspended from it. how much will the spring stretch if 30 n is suspended
Alik [6]
Initially, the spring stretches by 3 cm under a force of 15 N. From these data, we can find the value of the spring constant, given by Hook's law:
k= \frac{F}{\Delta x}
where F is the force applied, and \Delta x is the stretch of the spring with respect to its equilibrium position. Using the data, we find
k= \frac{15 N}{3.0 cm}=5.0 N/cm

Now a force of 30 N is applied to the same spring, with constant k=5.0 N/cm. Using again Hook's law, we can find the new stretch of the spring:
\Delta x =  \frac{F}{k}= \frac{30 N}{5.0 N/cm}=6 cm
4 0
3 years ago
Read 2 more answers
When electrons in an atom in an excited state fall to lower energy levels, energy is?
dusya [7]
Radiated away as electromagnetic radiation.
5 0
3 years ago
Motor oil , with a viscosity of 0 . 250 Ns / m2 , is flowing through a tube that has a radius of 5 . 00 mm and is 25 . 0 cm long
Thepotemich [5.8K]

Answer:

1.1775 x 10^-3 m^3 /s

Explanation:

viscosity, η = 0.250 Ns/m^2

radius, r = 5 mm = 5 x 10^-3 m

length, l = 25 cm = 0.25 m

Pressure, P = 300 kPa = 300000 Pa

According to the Poisuellie's formula

Volume flow per unit time is

V=\frac{\pi \times Pr^{4}}{8\eta l}

V=\frac{3.14 \times 300000\times \left ( 5\times 10^{-3} \right )^{4}}{8\times 0.250\times 0.25}

V = 1.1775 x 10^-3 m^3 /s

Thus, the volume of oil flowing per second is 1.1775 x 10^-3 m^3 /s.

3 0
3 years ago
A 15 n force directed to the west acts on an object for 3.0 seconds, what is the change in momentum of the object?
pickupchik [31]
By definition we have that
 force=dP/dt,
 where
 p is momentum
 so
 <span>momentum is force*time
 p= 15*3 = 45 Ns , west.
 </span><span>the change in momentum of the object is 45 N.s</span>
7 0
3 years ago
Which term BEST describes energy
mylen [45]

Answer:

batteries- chemical energy

food - heat energy

Explanation:

hope the answer helps u

3 0
2 years ago
Read 2 more answers
Other questions:
  • A small electronic device is rated at 0.16 W when connected to 115 V. What is the resistance of this device?
    7·2 answers
  • 7. Plasma from blood (density = 1025 kg/m3) flows along a vertical channel in a steady, incompressible, fully developed laminar
    14·1 answer
  • g Radiation of an unknown wavelength is used in a photoelectric effect experiment on a sodium surface. The maximum kinetic energ
    15·1 answer
  • _____ is a chemical property of matter.
    14·1 answer
  • What is the atomic mass of Jupiter?
    13·1 answer
  • A member of the marching band tunes their trombone inside their school. When they walk out to the field the instrument goes out
    8·2 answers
  • An iron bar can be made magnetic when __________.
    10·1 answer
  • An electric resistance heater is embedded in a long cylinder of diameter 30 mm. when water with a temperature of 25°c and veloc
    8·1 answer
  • When the air resistance can be ignored the velocity of an object dropped initially from rest is given by the following equation
    6·2 answers
  • john gottman, the eminent marriage counselor put the number of conflicts which cannot be resolved and needed to be worked on con
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!