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
Vinvika [58]
3 years ago
13

A bar on a hinge starts from rest and rotates with an angular acceleration α = 15+4t, where α is in rad/s2 and t is in seconds.

Determine the angle in degrees through which the bar turns in the first 2.00 min.
Physics
1 answer:
Arisa [49]3 years ago
3 0

Answer:

230.53°

Explanation:

α = angle in rad / t^2

t =2mins = 2 × 60 = 120sec.

α = angle in rad / 2^2

α = angle in rad / 16

15+4(2) = angle in rad /4

23 = angle/4

23× 4 = angle in radian

92 = angle in radian

But π rad = 180°

1 rad = 180 /π

Therefore

92 rad = 92 ×180/π = 5270.53°

This value is far more so we subtract from 360° continuously till we get a value less than 360°

5270.53- (360×14) =5270.53- 5040

230.53°

You might be interested in
How does microwave technology cook food?
Y_Kistochka [10]

Answer:

By heating all the water molecules which changes the thermal energy of the food

Explanation:

3 0
2 years ago
HURRY
motikmotik

Answer:

12

N

in the direction opposite to electric field.

Explanation:

Force on a charged particle

q

due to electric field

E

is given by

→

F

=

q

→

E

|

F

|

=

−

0.06

C

×

200

N

C

=

−

12 N

Here negative indicates that force is in the direction opposite to electric field.

6 0
2 years ago
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y
AnnyKZ [126]

The wavelength of the interfering waves is 3.14 m.

<h3>Calculation:</h3>

The general equation of a standing wave is given by:

y = 2A sin (kx) cos (ωt)                            ......(1)

The given equation represents the standing wave produced by the interference of two harmonic waves:

y = 3 sin (2x) cos 5t                                .......(2)

Comparing equations (1) and (2):

k = 2

We know that,

k = 2π/λ

λ = 2π/k

λ = 2 (3.14)/ 2

λ = 3.14 m

Therefore, the wavelength of the interfering waves is 3.14 m.

I understand the question you are looking for is this:

Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 3 sin (2x) cos 5t where x is in m and t is in s. What is the wavelength of the interfering waves?

Learn more about interfering waves here:

brainly.com/question/2910205

#SPJ4

5 0
2 years ago
Se coloca una tuerca con una llave, como muestra la figura, si el brazo r= 30 cm y el torque de apriete recomendado para la fuer
irina [24]

Answer:

F = 100 N

Explanation:

The torque is given by the expression

      τ = F x r

where bold letters indicate vectors, the magnitude of this expression is

     τ = F r sin θ

In general, when tightening a nut, the force is applied perpendicular to the arm, therefore  θ = 90 and sin 90 = 1

      τ = F r

      F = τ / r

calculate

      F = 30 / 0.30

      F = 100 N

6 0
3 years ago
A student blows in a tube with one closed in that is 0.49 m long. If the frequency of the sound is 358 Hz what is the speed wave
BaLLatris [955]

Answer:175.42m/s

Explanation:

Wavelength=0.49m

Frequency=358Hz

Velocity=frequency x wavelength

Velocity=358x0.49

Velocity=175.42m/s

6 0
3 years ago
Other questions:
  • An ostrich can run at a speed of 43 mi/hr. How much ground can an ostrich cover if it runs at this speed for 15 minutes? (Hint:
    8·1 answer
  • Which distance measurement is the most precise?
    14·1 answer
  • Que representa la educación física desde sus distintas disciplinas o enfoques
    5·1 answer
  • An object is hanging by a string from the ceiling of an elevator. The elevator is moving upward with a constant speed. What is t
    12·1 answer
  • Put these in order from least to greatest universe, Earth, Milky Way galaxy, solar system
    9·1 answer
  • Membrane walls of living cells have surprisingly large electric fields across them due to separation of ions. (Membranes are dis
    9·1 answer
  • What direction does energy transfer to the direction of a light wave
    15·2 answers
  • Figure 2.31 shows how the velocity of four cars changed as they
    15·2 answers
  • Troy, Xavier, and Emmitt are all football players. They decide to race each other up the bleachers one day. They take off runnin
    15·1 answer
  • Review. One electron collides elastically with a second electron initially at rest. After the collision, the radii of their traj
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!