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
marissa [1.9K]
3 years ago
14

Both mechanical and electromagnetic waves

Physics
1 answer:
xenn [34]3 years ago
6 0

Answer:

transmit energy

Explanation:

hope this helps u stay safe

You might be interested in
A pendulum of length L=36.1 cm and mass m=168 g is released from rest when the cord makes an angle of 65.4 degrees with the vert
pychu [463]

(a) -0.211 m

At the beginning the mass is displaced such that the length of the pendulum is L = 36.1 cm and the angle with the vertical is

\theta=65.4^{\circ}

The projection of the length of the pendulum along the vertical direction is

L_y = L cos \theta = (36.1 cm)(cos 65.4^{\circ})=15.0 cm

the full length of the pendulum when the mass is at the lowest position is

L = 36.1 cm

So the y-displacement of the mass is

\Delta y = 15.0 cm - 36.1 cm = -21.1 cm = -0.211 m

(b) 0.347 J

The work done by gravity is equal to the decrease in gravitational potential energy of the mass, which is equal to

\Delta U = mg \Delta y

where we have

m = 168 g = 0.168 kg is the mass of the pendulum

g = 9.8 m/s^2 is the acceleration due to gravity

\Delta y = 0.211 m is the vertical displacement of the pendulum

So, the work done by gravity is

W=(0.168 kg)(9.8 m/s^2)(0.211 m)=0.347 J

And the sign is positive, since the force of gravity (downward) is in the same direction as the vertical displacement of the mass.

(c) Zero

The work done by a force is:

W=Fd cos \theta

where

F is the magnitude of the force

d is the displacement

\theta is the angle between the direction of the force and the displacement

In this situation, the tension in the string always points in a radial direction (towards the pivot of the pendulum), while the displacement of the mass is tangential (it follows a circular trajectory): this means that the tension and the displacement are always perpendicular to each other, so in the formula

\theta=90^{\circ}, cos \theta = 0

and so the work done is zero.

5 0
3 years ago
On March 21, a stick casts the following shadow. What is the most likely time of day?
jenyasd209 [6]

Answer:

9:00 AM

Explanation:

I took the test and that was the answer

5 0
3 years ago
Read 2 more answers
PLEASE HELP
blagie [28]
Assuming Adam is on earth g= 9.8 m/s and m= weight/ gravity = 667/9.8 = 68 kg
8 0
3 years ago
Sort the processes based on the type of energy transfer they involve.
alina1380 [7]
Types of energy transfer involve
Conduction, Convection, Evaporation,and Condensation  <span />
7 0
3 years ago
PLEASE HELP ME.....WILL MARK BRAINLIEST ANSWER
schepotkina [342]
A) gases particles are far apart
8 0
3 years ago
Read 2 more answers
Other questions:
  • Fusion is a type of _____.
    13·1 answer
  • What is the formula for momentum?
    5·1 answer
  • What effect does observing a substance s physical properties have on the substance
    9·1 answer
  • During times of stress, Yanira notices that her heart pounds a little faster than normal. What part of the brain is responsible
    6·2 answers
  • Beaker contain 200 mL of water what is volume of water in cm cube and m cube
    8·2 answers
  • A step-up transformer is connected to a generator that is delivering 197 v and 113 A. The ratio of the turns on the secondary is
    13·1 answer
  • What occurs along a convergent plate?
    11·1 answer
  • suppose that you look into a photometer's eyepiece and the fluorescent disks appear to be equal in intensity. If the distance be
    11·1 answer
  • You are riding a bicycle home from school. You average 5 meters per second and you are headed south.
    15·1 answer
  • The grocery store is 20 miles away
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!