A child is sending pulses down a stretched rope at a rate of 2 pulses per second. The distance between the pulses is 5 meters. What is the speed of the wave?a. 5 m/s
c. 2 Hz
b. 10 m/s
d. 2.5 m/s User: Longitudinal seismic waves are known as
a. primary waves.
b. secondary waves.
c. surface waves.
d. transverse waves.
Answers
Wave speed = (wavelength) x (frequency)
= (5 meters) x (2 per second)
= 10 meters per second .
Related Questions
File:No file chosenWhenever electrons of an atom unite with electrons of another atom, a chemical change occurs.What is the cause?What kind of change occurs? Water expands when it freezes. Expanded ice floats on lakes and ponds.What causes the water to expand?What is the effect on the expanded ice?Some metals will expand when heated. Expanded metals may bend.What causes the metal to expand?What are the effects of the expanded metal?Gases expand when heated. An expanded gas occupies more space.What causes the gas to expand?What are the effects of the expanded gases?Answer the above questions and give an example of a cause and effect relationship. See if you can think up a cause and effect relationship using acids, bases, and neutralization.
The process by which water diffuses from a region of greater concentration to a region of lesser concentration is called
In a compressional wave the denser the medium is at the compressions the smaller is amplitude?
How do the different forms of potential energy depend on an object's position or chemical composition?
Answers
Answer:
5N
Explanation:
To get the magnitude of the force would require to just loosen the nut, if the force apply perpendicularly at the end of the handle, we will have to resolve the force perpendicular to the wrench. Torque is the turning effect of a body or force about a point. It is similar to moments.
Torque = Force * radius
Note that the force must be perpendicular to the wrench. On resolving the force perpendicularly to the wrench, we will have to resolve the force to the vertical.
Fy = Fsinθ
Fy = 10sin30°
Fy = 10 * 0.5
Fy = 5N
Torque = Fy * r
Given Fy = 5N and r = 20cm = 0.2m
Torque = 5 * 0.2
Torque = 1Nm
Hence the magnitude of the force would require to just loosen the nut, if the force apply perpendicularly at the end of the handle is 5N
Answers
d = -2 m
a = - 9.81 m/s^2
t = ?
Formula
d = vi*t + 1/2 a t^2
- 2 = 6m/s *t - .5 * 9.81 * t^2
Put the - 2 on the right.
4.905 t^2 + 6 m/s t +2 = 0
a = -4.905 m/s^2
b = 6 m/s
c = 2 m
t = [- b +/- square root(b^2 - 4ac)]/(2a)
t = [ -6 +/- square root (6^2 - 4*(-4.905)*2)] / (- 4.905*2)
t = [-6 +/- 8.674) / - 9.81
t = -14.674/-9.81
t = 1.69 seconds.
B. 17,705.1 J
C. 20,075.04 J
D. 51,302.88 J
Please include how you got your answer , thank you.
Answers
Answer:
B. 17,705.1 J
Explanation:
The hear released when the mercury condenses into a liquid is given by:
where
m = 0.06 kg is the mass of the mercury
is the latent heat of vaporization
For mercury, the latent heat of vaporization is , so the heat released during the process is:
So, the closest option is
B. 17,705.1 J
The energy ( in joules ) released when 0.06 kilograms ofmercury is condensed to a liquid at the same temperature is about 697.08 J. inother to solve this problem, should know the latent heat of fusion of mercurywhich is equal to about 11.4 kJ/kg and multiplying by mass of mercury.
B. a gamma ray.
C. an X-ray.
D. an alpha ray.
E. They all penetrate material the same distance
Answers
Answers
Answer: The given statement is false.
Explanation:
Kinetic energy is defined as the energy obtained by an object because of its motion.
For example, moving a pulley on the road.
Whereas energy of an object obtained due to its position is known as potential energy.
For example, lifting a book from table to the shelf shows position of the book has changed.
Therefore, we can conclude that the statement kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf, is false.
Answers
A printer has power of 100 W, and it takes time of 30 seconds to print out the document, then the power consumed in 30 seconds will be 0.8333 W.
What is Power?
The quantity of energy moved or changed per unit of time is termed as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in historical texts. A scalar quantity is power.
Power is connected to other factors; for instance, the power required to move a land vehicle is equivalent to the sum of the vehicle's velocity, traction force on its wheels, and aerodynamic drag.
Assuming the printer consumes electrical energy at a steady rate, then:
100 ÷ 60 = 1.6667 watts per minute.
Now, calculate the power consumed in 30 seconds,
1.6667 ÷ 2 = 0.8333 watts.
Therefore, the power consumed in 30 seconds will be 0.8333 watts.
To know more about Power:
#SPJ2
100W translates to 100 watts consumed in 1 hour. Assuming the printer consumes electrical energy at a steady rate, then: 100 ÷ 60 = 1.6667 watts per minute. 1.6667 ÷ 2 = 0.8333 watts consumed in 30 seconds.