Physics

Which level instruments operate on the principle of generating a signal and then measuring the time required for the signal to reflect off the process fluid back to the transmitter
2 Answers
The main environmental effects of ozone depletion could include all of the following except
2 Answers
A sound wave passes from air into water and then into steel. With each change in medium, what happens to the speed of the wave?.
1 Answer
What is average acceleration? How does acceleration occur?
2 Answers
Use work and energy to find an expression for the speedof the block in the following figure just before it hits thefloor.(Figure 1)
1 Answer
pls help me idrk any of this
2 Answers
A current of 5. 0 amperes is passing through a piece of wire. Determine how long it takes for 30 coulombs of charge to pass through this wire
2 Answers
2. What value did you calculate for the index of refraction of the acrylic block in Part 2? How does your value compare to the accepted value of 1.50? Calculate the percentage error. Different materials have distinct indexes of refraction. Explain how you might identify a material based on experiments like this one. Mention at least one of the difficulties in identifying materials based on their indexes of refraction.
1 Answer
A student looks at a white light source through spectroscope which views the light through many tiny slits. The student sees a rainbow of colors. Which of these is the best explanation for why the student sees many colors through the slits.
1 Answer
What does it mean for something to have charge?
2 Answers
A current in a wire increases from 2 a to 6 a. how will the magnetic field 0.01 m from the wire change? it increases to four times its original value. it increases to three times its original value. it decreases to one-fourth its original value. it decreases to one-third its original value.
2 Answers
to be a social worker, you must have a masters degree A.TrueB.False
1 Answer
A negatively charged plastic comb is brought close to, but does not touch, a small piece of paper. If the comb and the paper are attracted to each other the charge on the paperA) must be negativeB) may be positive or neutralC) may be negative or neutral D)must be positive
1 Answer
A runner begins from rest at the starting line and travles for 6.5 seconds, a runner reaches a speed of 13.4 m/s what is the runners acceleration?
1 Answer
what is this one too i dont know im lazy right now
1 Answer
Why does the final electron energy not depend on the focusing cylinder voltage?
2 Answers
What is the term for either the number of times per second that a wave vibrates or the number of matching points that pass a location during one second? O A. Frequency B. Period O C. Wavelength D. Amplitude
1 Answer
ANSWER FAST!!!Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down menus to complete the statements. In this experiment, the ______ was intentionally manipulated. This was the independent variable. The dependent variable measured was the ________ .
2 Answers
An atom or ion has the abbreviated electron configuration [kr]. Select the species that it could not be
2 Answers
16. By how much leeway (both percentage and mass) would you have in the selection of the mass of the object in the previous problem if you did not wish the new period to be greater than 2.01 s or less than 1.99 s?Please show all of your work.
1 Answer
A 0.105- kg hockey puck moving at 24 m/s is caught and held by a 75-kg goalie at rest. With what speed does the goalie slide on the ice after catching the puck? Define the puck and the goalie as a system.please show work, help
1 Answer
In one to two sentences, describe the relationship between harmonics and resonance frequency in a piano.
2 Answers
Two people of equal mass attempt a tug-of-war with a 10 m long ropewhile standing on ice. On pulling the rope, they both slide towardseach other. What will be the acceleration for each person?
1 Answer
A light bulb operating at a dc voltage of 120 V has a power rating of 60 W. How much current is flowing through this bulb
1 Answer