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1. What is the difference between mass and weight? On earth, what is the weight of a 1 kg mass?
2. When your textbook says that the moon "falls around the earth," does it mean that the moon will eventually fall from the sky and hit the earth? If not, what does it mean?
3. On a winter day, is it scientifically correct to say that the inside of your house is chilly because "cold seeps through the windows from outside"? Why or why not? What might you say instead?
4. Can sound travel through a vacuum? Why or why not?
5. A. A circuit has a resistance of 4 ohms and a potential difference of 8 volts across it. What is the current in the circuit? (Presume the circuit obeys Ohm's law.) Show your calculations.
6. B. How much power does the circuit in part A draw? Show your calculations.
How fast can this car round a second curve of radius 320m?
How close to the edge of the 28.0 kg table, that is 2.2m with legs 1.2m apart, can a 62.0 kg person sit without tipping it over.
A block of mass 2.7 kg being released from rest on a 1m frictionless plane, inclined at an angle of 40 degree. The block sided down the inclined and struck second block mass of 3.7 kg. If the two blocks stick together, with what speed would they move..
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
The air-track carts in the figure are sliding to the right at 1.0 m/s. The spring between them has a spring constant of 120 N/m and is compressed 4.5 cm. Compute the speed of the air track carts held by a string together.
How many revolutions does wheel make throughout the time
The link between portfolio level objectives with portfolio success factors that are achieved through individual projects and points out how contributes to strategic fit, use of synergies, etc.
What is Newtons Version of Keplers Third Law
A 21 g bullet travelling at 255 m/s is fired into a 0.452 kg wooden block anchored to a 100 N/m spring. How far is spring compressed to the nearest thousandth of a meter.
An object falls because of gravity at the rate of -920 cm/s2 (- sign is indicative of a downward direction) for 10.00 Seconds. If it starts from rest (vo = 0) and its position starts from do= 0.0, where is it 10.00 Seconds later.
A skier starts from rest at the top of a hill that is inclined at 12.0° with the horizontal. The hillside is 180.0 m long, and the coefficient of friction between the snow and the skis is 0.0750. At the bottom of the hill, the snow is level and the c..
A loudspeaker is placed between two observers who are 120 m apart, along line connecting them. If one observer records a sound level of 52.8 dB and the other records a sound level of 83.5 dB, how far is the speaker from each observer? Enter the longe..
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