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
Sonja [21]
2 years ago
6

An oscillator makes 360 vibrations in 3 minutes.

Physics
2 answers:
IceJOKER [234]2 years ago
8 0

Explanation :

It is given that an oscillator makes 360 oscillations in 3 minutes.

(a) Using unitary method :

No. of vibrations in one minute is, n=\dfrac{360}{3}=120

So, no of vibrations in one minute is 120.

(b) Similarly,

3 minutes = 180 seconds

No of vibrations in one second is \dfrac{360}{180}=2

So, the no of vibrations in one second is 2.

(c) Time period of the wave is given by :

T=\dfrac{1}{2\ s^{-1}}

T=0.5\ s

The time period of the wave is 0.5 s

(d) The no of vibation per second is called as its frequency.

\nu=\dfrac{1}{T}

\nu=2\ Hz

Hence, this is the required solution.

Pie2 years ago
3 0
A) 120 vibrations per minute
b)d) 2 Hz (vibrations per second)
c) The period is half of the second.
You might be interested in
The volume of a cylindrical tin can with a top and a bottom is to be 16π cubic inches. If a minimum amount of tin is to be used
sergiy2304 [10]

Answer:

h = 4 in

Explanation:

GIVEN DATA:

volume of tin= 16 \pi

we know that

volume of cylinder is v = \pi r^2  h

so,

16 \pi = \pi r^2 h

16 = r^2 h

r = \sqrt{\frac{16}{h}}

construct formula for surface area

S = 2\pi r^2 +  2\pi rh

S = \frac{2v}{h} + 2 \sqrt{v \pi h}

minimize the function wrt  h

S' = \frac{2v}{h^2} + \sqrt{\frac{v \pi}{h} =  0

solving for h we have

h = [\frac{4 v}{\pi}]^{1/3}

we kow v = 16 \pi   so

h = 4 in

8 0
3 years ago
A 45 N girl sits on a bench 0.6 meters off the ground. How much work is done on the bench?
ycow [4]

Answer: 27 joules

Explanation:

Work is done when force is applied on the bench over a distance. it is measured in joules.

Workdone = force x distance

= 45 N x 0.6 metres

= 27 joules

Thus, 27 joules of work is done on the bench.

6 0
3 years ago
When the Glen Canyon hydroelectric power plant in Arizona is running at capacity, 690 m3 of water flows through the dam each sec
bixtya [17]

Answer:

1340.2MW

Explanation:

Hi!

To solve this problem follow the steps below!

1 finds the maximum maximum power, using the hydraulic power equation which is the product of the flow rate by height by the specific weight of fluid

W=αhQ

α=specific weight for water =9.81KN/m^3

h=height=220m

Q=flow=690m^3/s

W=(690)(220)(9.81)=1489158Kw=1489.16MW

2. Taking into account that the generator has a 90% efficiency, Find the real power by multiplying the ideal power by the efficiency of the electric generator

Wr=(0.9)(1489.16MW)=1340.2MW

the maximum possible electric power output is 1340.2MW

3 0
2 years ago
330 grams of boiling water (temperature 100°C, specific heat capacity 4.2 J/K/gram) are poured into an aluminum pan whose mass i
Alexus [3.1K]

Answer:

T = 74°C

Explanation:

Given Mw = mass of water = 330g, Ma = mass of aluminium = 840g

Cw = 4.2gJ/g°C = specific heat capacity of water and Ca = 0.9J/g°C = specific heat capacity of aluminium

Initial temperature of water = 100°C.

Initial temperature of aluminium = 29°C

When the boiling water is poured into the aluminum pan, heat is exchanged and after a short time the water and aluminum pan both come to thermal equilibrium at a common temperature T.

Heat lost by water equal to the heat gained by aluminium pan.

Mw × Cw×(100 –T) = Ma × Ca × (T–29)

330×4.2×(100– T) = 890×0.9×(T–29)

1386(100 – T) = 801(T –29)

1386/801(100 – T) = T – 29

1.73(100 – T) = T – 29

173 –1.73T = T –29

173+29 = T + 1.73T

202 = 2.73T

T = 202/2.73

T = 74°C

6 0
3 years ago
Two factors effecting the magnitude of the force of gravity between 2 objects are...
slavikrds [6]

Answer:

Two factors effecting the magnitude of the force of gravity between 2 objects are the product of their masses and square of distance between them.

Explanation:

According to Newton's law of universal gravitation

              F = G\frac{m_{1}m_{2}  }{r^{2} } }

where F is the gravitational force, G is the universal gravitational constant and its value is 6.6743 × 10⁻¹¹ Nm²/kg₂ , m₁ and m₂ are masses of bodies and r is the distance between them.

It can be seen from the above equation that F is directly proportional to the product of the masses and inversely proportional to the square of distance between them.

                       F ∝ m₁m₂

                        F ∝ 1/r²

As far as the masses of the bodies increase, magnitude of the Gravitational force increases and if distance between them increase then Gravitational force between them decreases.

5 0
2 years ago
Other questions:
  • What's a broad flat volcano created by quiet eruptions
    13·1 answer
  • A car moves to the right as shown. In order for the
    13·1 answer
  • A car is initially moving at 20 m/s east and a little while later it is moving at 10 m/s north. Which of the following best desc
    13·1 answer
  • A scientist spends most of his time observing the night time sky and tracking the orbits of planets. Which branch of physical sc
    11·1 answer
  • Which statements describe Rutherford model of the atom
    14·2 answers
  • A testable prediction is a(n) ______. Group of answer choices a. hypothesis b. experiment c. exercise d. variable
    14·2 answers
  • 4)
    8·2 answers
  • A planet moves in a circular orbit of radius 4.5x10^15 m with a period of 4
    11·1 answer
  • A racing car on a straight accelerates from 100mph to 316 mph in three seconds what is the acceleration?
    10·1 answer
  • A 40kg cart gains a KE of 200J. How fast does it go?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!