Physics

1. What is one way that light waves differ from sound waves?A. Light waves all have the same frequency..B. Light waves travel by oscillation.C. Light waves do not require a medium to propagate.D. Light waves transfer energy.2. Which best explains why high frequency electromagnetic waves are more likely to cause harm to living things?(1 point)A. As a wave's frequency increases, more energy is carried by the wave in a given time period.B. As a wave's frequency increases, less energy is carried by the wave in a given time period.C. As a wave's frequency increases, a constant energy is carried by the wave in a given time period.D. As a wave's frequency increases, the energy carried by the wave in a given time period is equal to zero.3. How do the frequencies and the speeds of yellow light and blue light compare?
2 Answers
A cars tire rotates 5.25 times in 3 seconds. What is the tangential velocity of the tire?
1 Answer
A 23. 6 g ball of clay is thrown horizontally to the right at 40. 4 m/s toward a 1. 70 kg block sitting at rest on a frictionless surface. The clay hits and sticks to the block. What is the speed of the block and clay right after the collision?Answer in m/s to three significant figures
1 Answer
What do tripped circuit breakers and blown fuses indicate.
1 Answer
Which of these circuits has a voltmeter?O(A)(B)(C)(D)(E) OBB. ODD
1 Answer
Three different scientific institutions provide data about how much the annual global temperature has deviated from the norm in the years 1880 to 2014. The nort isbased on the temperatures of a base period, from 1951 to 1980Institution A's data show that the annual global temperature deviated from the norm by 0.75C in 2010Institution B's data show that the annual global temperature deviated from the norm by 0.72C in 2010Institution C's data show that the annual global temperature deviated from the norm by 0.77C in 2010.Which are accurate statements about this data? Select the two correct answers(1 point)
1 Answer
The reflection of a 10. 0 cm object appears to be 18 cm tall and 9 cm behind the mirror. What distance is the object from the mirror? cm.
1 Answer
1. Greek scientist called Archimedes was asked to check the purity of the gold in a crown. He did this by comparing the density of the crown with the density of pure gold.a) Describe how he could have measured the density of an irregular shaped object as a crown.
2 Answers
A magnifier allows one to look at a very near object by forming an image of it farther away. The object appears larger. To create a magnifier, one would use a.
1 Answer
Identify the aspects of the pictured graph that are missing or contain errors.
1 Answer
In what type of system is mechanical energy lost to its surroundings?A. internalB. externalC. closedD. open
1 Answer
7. Why are cooking pans made of aluminum? {Explain using the specific heat value ofaluminum} it conducts heat well high thermal energy
1 Answer
What is an analogy of two different roads or rivers to compare a series and parallel circuit?
1 Answer
Which best describes an action related to interdependence?A. limiting the amount of fish harvested to ensure future availabilityB. finding methods for extracting oil with minimal damage to the environmentC. using calculations to ensure that lumber is used efficientlyD. predicting the profits from selling metal that is extracted from ore
1 Answer
A __________is a large cool star located in the top right of the HR diagram.
1 Answer
Suppose that a car speaker produces sound waves with a frequency of 4000 Hz. As the car speaker moves away from an observer, which of thefollowing occurs?
1 Answer
When a force is applied to a wheel, its axle exerts a greater force?
1 Answer
Please help, question is the picture.
1 Answer
you have to choose more than one on this
1 Answer
Thermal energy is transferred between objects when they have?A. the same massB. different temperaturesC. the same kinetic energy
2 Answers
A capacitor of cylindrical shape as shown in the red outline, few cm long carries a uniformly distributed charge of 7.2 uC per meter of length. By constructing a suitable Gaussian surface around the wire, Find the magnitude and direction of the electric field at points (a) 5.5 m and (b) 2.5 m perpendicular from the center of the wire. Show your detailed calculations and comment on the results.
1 Answer
What is the absolute error expression of this ?
1 Answer
HELP MEEEE, question number 5
1 Answer
Momentum questions help
1 Answer