Physics

if your mass, the mass of earth, and the mass of everything in the solar system were twice as much as it is now, yet everything stayed the same size, your weight on earth would
1 Answer
what is the mass, in units of me (the mass of the earth), of a planet with twice the radius of earth for which the escape speed is twice that for earth?
1 Answer
a square wave voltage varies between 0 v and 12 v. the positive pulses are 25ms wide and there is a 75ms gap between them. what is the dc average of the waveform?
1 Answer
what are some of the challenges associated with using solar energy as a primary source of electricity,
1 Answer
a brick is falling from the roof of a three-story building. how many force vectors would be shown on a free-body diagram? name them
1 Answer
How much heat is necessary to change 10 g of ice at -20C into water at 10C?
1 Answer
The human perception of pitch primarily depends on __. Multiple choice question. Loudnessresonanceintensityfrequency
1 Answer
A Car accelerate Cuniformly from) 13 ms -1 to 31ms-1 while entering the motor way Covering the distance 220m
1 Answer
calculate the spring constant, k, if the spring is compressed by 1.00 cm and the total stored potential energy is 0.00694 j.your answer should be in n/m or kg/s2.
1 Answer
the generation of multiple forecasts of future conditions followed by an analysis of how to respond effectively to each of those conditions is
1 Answer
two sound speakers emit pure tones of the same frequency and loudness. when you walk from one speaker to the other on a line joining the two speakers, the sound is heard to alternate from loud too soft. what is happening?
1 Answer
if the magnet is moving away from the loop, will the current in the loop flow in the direction shown in (a) or the direction shown in (b)?
1 Answer
You leave Fort worth ,Texas,at 2:41 p.m. and arrive in Dallas at 3:23 p.m. , covering a distance of 58km. what is your average speed in metres per second ?
1 Answer
Two objects, m1 and m2, have an elastic collision. The initial velocity of m1 is +6. 0 m/s and of m2 is +4. 0 m/s. After the collision, the velocity of m1 is +5. 0m/s. What is the velocity of m2?
1 Answer
1. did the kinetic or static frictional coefficient vary with normal force? give your conclusions and support them based on your simulation results from parts a and b.
1 Answer
g what is the ideal banking angle (in degrees) for a gentle turn of 1.40 km radius on a highway with a 105 km/h speed limit (about 65 mi/h), assuming everyone travels at the limit?
1 Answer
define the term force and give some examples of it
1 Answer
given that the first 30 super igniters successfully launch rockets, is it reasonable to believe that the failure rate of the super igniters is less than 15 percent? explain.
1 Answer
if an 80 kg person is 5 m away from a 100 kg person, what is the force of gravity between them?
1 Answer
could any of you please help i really need it
1 Answer
consider an infinite potential well with the width a. what happens to the ground state energy if we make the width smaller?
1 Answer
jake is traveling west on a highway. at 1:00 pm, jake passes the mile marker 485. at 4:30 pm, he passes mile marker 154. what is jake's average velocity?
1 Answer
calculate the force required to stop a car of mass 1400 kg in 2 seconds if it is moving with a velocity of 10 m/s.
1 Answer
an electric eel can generate a 278-v, 0.8-a shock for stunning its prey. what is the eel's power output?
1 Answer