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
masha68 [24]
2 years ago
12

PLEASE HELP ME I AM TIMED!

Physics
1 answer:
Arte-miy333 [17]2 years ago
6 0
The sequence of rock layers can be disturbed by erosion and earthquakes


You might be interested in
A person can run 400m in 72 s.. At what speed are they running
rewona [7]
Speed = distance/time
= 400/72
=5.55 m/s
6 0
3 years ago
How does the vertical component of a projectile’s motion compare with the motion of vertical free fall when air resistance is ne
likoan [24]

Answer:

Explanation:

The vertical component of velocity remains same as the free fall. The vertical motion of the projectile is same as the free fall motion.

5 0
3 years ago
The rate at which light energy is radiated from a source is measured in which of the following units?
Over [174]
The correct option is D.
Lumen is used to quantify the amount of total light energy that a source is putting out in all direction, thus, it refers to luminous output of a light source. Initial lumen refers to the luminosity of a light when it was first turned on; the luminosity is highest at this point. 
3 0
3 years ago
Read 2 more answers
A string, stretched between two fixed posts, forms standing-wave resonances at 325 Hz and 390 Hz. What is the largest possible v
Pavel [41]

Answer:

65

Explanation:

The resonant frequencies for a fixed string is given by the formula  nv/(2L).  

Where n is the multiple .

v is speed in m/s .

The difference between any two resonant frequencies is given by v/(2L)= fn+1 – fn

fundamental frequency means n=1

i.e  fn+1 – fn = 390 -325

                      =  65

3 0
3 years ago
An apparatus similar to the one used in lab uses an oscillating motor at one end to vibrate a long rope with frequency f = 40 Hz
Mice21 [21]

Answer:

The displacement in t = 0,  

y (0) = - 0.18 m

Explanation:

Given f = 40 Hz , A = 0.25m , μ = 0.02 kg / m, T = 20.48 N

v = √ T / μ

v = √20.48 N / 0.02 kg /m = 32 m/s

λ = v / f

λ = 32 m/s / 40 Hz = 0.8

K = 2 π / λ

K = 2π / 0.8 = 7.854

φ = X * 360 / λ

φ = 0.5 * 360 / 0.8 = 225 °

Using the model of y' displacement

y (t) = A* sin ( w * t - φ )

When t = 0

y (0) = 0.25 m *sin ( w*(0) - 225 )

y (0) = 0.25 * -0.707

y (0) = - 0.18 m

5 0
3 years ago
Other questions:
  • Convert 3 hours 21 minutes to decimal hours.
    9·1 answer
  • What form of energy are microwaves?
    7·1 answer
  • How many calories are absorbed by a pot of water with a mass of 500g in order to raise the temperature from 20c to 30c?
    7·1 answer
  • Joe and Bill throw identical balls vertically upward. Joe throws his ball with an initial speed twice as high as Bill. If there
    14·1 answer
  • Which statements about electric field lines are correct? Check all that apply.
    15·1 answer
  • Cecily is inflating her bicycle tyre with the pump below. When she pushes the plunger down, it is doing work against the gas. Th
    13·1 answer
  • Which geologic events occur most often at this mid-oceanic ridge plate
    8·1 answer
  • True or false
    13·1 answer
  • A 3000-kg truck moving with a velocity of 25 m/s hits a 1000-kg parked car. The impact causes the 1000-kg car to be set in motio
    12·1 answer
  • Extremely confused, please help
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!