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
yKpoI14uk [10]
3 years ago
8

PLS ANSWER FAST WILL GIVE BRAINLY!!!

Physics
1 answer:
Len [333]3 years ago
5 0

Answer:

Into sound and heat energy due to friction.

You might be interested in
Find the time it would take a car going 25 meters per seconds,east, to travel 400 meters per seconds,east
nexus9112 [7]
400÷25= 16seconds is the answer
3 0
3 years ago
A fire truck emits an 880Hz siren. As the truck approaches an observer on the sidewalk, he perceives the pitch to be 950Hz. Appr
Ludmilka [50]

Answer:

The pitch that he hears after the truck passes and is moving away is 819.6 Hz.

Explanation:

The pitch that he hears after the truck passes and is moving away can be calculated using the following equation:    

f = f_{0}*\frac{v_{s} \pm v_{o}}{v_{s} \pm v_{f}}

Where:

f: is the perceived frequency

f_{0}: is the emitted frequency

v_{s}: is the speed of sound = 340 m/s

v_{o}: is the speed of the observer = 0 (he is not moving)

v_{f}: is the speed of the fire truck

First, we need to find the speed of the fire truck. When it approaches the observer we have:

f = f_{0}*\frac{v_{s} + v_{o}}{v_{s} - v_{f}}

950 Hz = 880 Hz*\frac{340 m/s}{340 m/s - v_{f}}

v_{f} = 340 m/s - \frac{880 Hz*340 m/s}{950 Hz}

v_{f} = 25.05 m/s

Hence, the speed of the fire truck is 25.05 m/s.

Now, we can calculate the pitch that the observer hears after the truck passes:

f = f_{0}*\frac{v_{s} - v_{o}}{v_{s} + v_{f}}

f = 880 Hz*\frac{340 m/s}{340 m/s + 25.05 m/s}

f = 819.6 Hz

Therefore, the pitch that he hears after the truck passes and is moving away is 819.6 Hz.

I hope it helps you!                                                          

7 0
3 years ago
1) Beth rode the Flying Saucer ride at her favorite amusement park. The ride hung from a rod and swung back and forth while simu
quester [9]

#1

Since Beth rode the Flying saucer ride which is spinning on its axis while axis is moving to and fro as well, so here Beth will experience two motions in this case

(i) Spinning motion

(ii) Rotational motion

#2

Jill and Scott both traveled for 30 min

So time of motion for both is 0.5 h as we know that 1 h = 60 min

Now from the formula of speed we know that

speed = \frac{distance}{time}

Speed of Jill

v_1 = \frac{5}{0.5} = 10 km/h

speed of Scott

v_2 = \frac{10}{0.5} = 20 km/h

so correct answer is

B) Scott had the faster speed since he rode at 20 k/h while Jill only traveled 10 km/h.

#3

Since we know that <em>acceleration is rate of change in velocity</em>

So here we can say that every motion where velocity changes with time then it is an accelerated motion.

Now change in velocity occurs when either the magnitude will change or its direction will change because here velocity is a vector quantity and it will change with magnitude and direction both.

so here due to oval path the direction of velocity will changes at many points and hence it will be an accelerated motion.

so correct answer is

<em>C) James was right since the car changed direction during the race.</em>


6 0
3 years ago
Read 2 more answers
What does Newton's third law describe?
Dennis_Churaev [7]
A. Equal and opposite forces

Explanation:
History law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exert an equal and opposite force on object A
7 0
3 years ago
a driver brings a car to a full stop in 2.0 s. if the car was initially traveling at 22 m/s, what is the acceleration
Nuetrik [128]

Answer: what is it?

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Describe how objects can become electrically charged
    11·1 answer
  • An unpolarized light shines on an object that is placed below a crystal. When an observer looks at the object through the crysta
    9·1 answer
  • A train is traveling at a speed of
    12·1 answer
  • You are climbing in the High Sierra when you suddenly find yourself at the edge of a fog-shrouded cliff. To find the height of t
    7·1 answer
  • Put the following steps for calculating net worth in the correct order.
    9·1 answer
  • The effectiveness of biofeedback has been a subject of controversy because biofeedback __________.
    15·2 answers
  • Which of the following statements is true about hydrothermal vents?
    8·2 answers
  • Type your response in the box.
    8·1 answer
  • At what distance x from the center of the coil, on the axis of the coil, is the magnetic field half its value at the center?
    5·1 answer
  • 2. Can the frictional force in this experiment be ignored? Explain.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!