answer.
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
Bad White [126]
2 years ago
6

In an experiment, a torque of a known magnitude is exerted along the edge of a rotating disk. The disk rotates about its center.

All frictional forces are considered to be negligible. Which of the following quantities should a student collect in order to determine the change in angular momentum of the disk for a specific time interval? Justify your selection.
A) The initial angular velocity of the disk, because this quantity is related to the angular impulse of the disk.
B) The amount of time the torque is applied to the disk, because the time interval is related to the angular impulse of the disk.
C) The mass of the disk, because this quantity is related to the rotational inertia of the disk. The radius of the disk, because this quantity is related to the rotational inertia of the disk.
Physics
1 answer:
lisabon 2012 [21]2 years ago
3 0

Answer:

B) The amount of time the torque is applied to the disk, because the time interval is related to the angular impulse of the disk.

Explanation:

Angular impulse = Torque x time

= change in angular momentum

So,

Torque x time  = change in angular momentum

change in angular momentum = Torque x time

Torque is already known .

Hence to know the change in angular momentum what is needed to know is time duration of torque acting on the body .

You might be interested in
Trained dolphins are capable of a vertical leap of 7.0 m straight up from the surface of the water - an impressive feat. Suppose
dmitriy555 [2]

Answer:14 m

Explanation:

Given

Vertical jump make by the dolphin is given by h=7\ m

Suppose the dolphin jump with an initial velocity of u

so u is given by u^2=2\cdot g\cdot h

If dolphin launches at an angle \theta then maximum horizontal range is given by

assuming the of Dolphin to be Projectile so range is given by

R=\frac{u^2\sin 2\theta }{g}

substitute the value of u^2

R=\frac{2\times 9.8\times 7\sin 2\theta }{9.8}

R=2h\sin 2\theta

Range will be maximum for \theta =45^{\circ}

thus R_{max}=2\times 7\times 1=14\ m

                                     

3 0
2 years ago
A ray diagram without the produced image is shown.
Goryan [66]

Answer:

B) inverted and real

Explanation:

6 0
2 years ago
At the normal boiling temperature of iron, TB = 3330 K, the rate of change of the vapor pressure of liquid iron with temperature
Margaret [11]

The molar latent enthalpy of boiling of iron at 3330 K is  ΔH = 342 \times 10^3 J.

<u>Explanation:</u>

Molar enthalpy of fusion is the amount of energy needed to change one mole of a substance from the solid phase to the liquid phase at constant temperature and pressure.

                      d ln p = (ΔH / RT^2) dt

                   (1/p) dp = (ΔH / RT^2) dt

                    dp / dt = p (ΔH / RT^2) = 3.72 \times 10^-3

                  (p) (ΔH) / (8.31) (3330)^2 = 3.72 \times 10^-3

                          ΔH = 342 \times 10^3 J.

8 0
2 years ago
Read 2 more answers
Segmented mirrors sag under their own weight. their optical shape must be controlled by computer-driven thrusters under the mirr
madam [21]
Active Optics.


Hope that helps, Good luck! (:
6 0
2 years ago
True or false—If a rock is thrown into the air, the increase in the height would increase the rock’s kinetic energy, and then th
nlexa [21]
I think that this is false but I am not sure
5 0
1 year ago
Other questions:
  • To avoid an accident, a driver steps on the brakes to stop a 1000-kg car traveling at 65km/h. if the braking distance is 35 m, h
    7·1 answer
  • A receptor that contains many mechanically-gated ion channels would function BEST as a ____________.
    10·1 answer
  • Is the electric potential energy of a particle with charge q the same at all points on an equipotential surface?
    13·1 answer
  • When laser light of wavelength 632.8 nm passes through a diffraction grating, the first bright spots occur at ± 17.8 ∘ from the
    8·1 answer
  • Ryan and Becca are moving a folding table out of the sunlight. A cup of lemonade, with the message 0.44 kg is on the table. Becc
    6·1 answer
  • When a car drives along a "washboard" road, the regular bumps cause the wheels to oscillate on the springs. (What actually oscil
    10·1 answer
  • Acetone, a component of some types of fingernail polish, has a boiling point of 56°C. What is its boiling point in units of kelv
    10·2 answers
  • Suppose the dim-looking headlight on the right is actually a small light on the front of a bicycle. What can you conclude about
    15·1 answer
  • Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration?
    9·1 answer
  • If the ac peak voltage across a 100-ohm resistor is 120 V, then the average power dissipated by the resistor is ________
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!