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How I Scales if we multiply all the design dimensions of an object by a scaling factor f, its volume and mass will be multiplied by f3.
(a) By what factor will its moment of inertia be multiplied?
(b) If a scale model has a rotational kinetic energy of 2.5 J, what will be the kinetic energy for the full scale object of the same material rotating at the same angular velocity?
Consider a series RLC circuit where R = 957 ? and C = 5.25 ?F. However, the inductance L of the inductor is unknown. To find its value, What is the inductance of the inductor in millihenrys
A 90 kg astronaut completes repairs on a 470 kg communications satellite, and then pushes off from the satellite. When no longer in physical contact, the astronaut is moving at 42 cm/s relative to the satellite. What change in velocity has the astron..
Air molecules in a warm room (27°C = 300 K)typically have speeds of about 500 m/s (1,100 mph). Why is it that we are unaware of these fast-moving particles continuously colliding with our bodies?which is correct?
Two long, straight, parallel wires carry the similar current in te same direction. (A) Use both the right-hand source and force rules to decide whether the forces on the wires are (1) attractive or (2) repulsive.
Two forces, and , act on the 7.00-kg block shown in the drawing. The magnitudes of the forces are F1=55.5 N and F2=33.5 N. Find the horizontal acceleration of the block
Ants can become charged and can be treated as point charges. At what location is the total electric field zero from the two ants (other than infinity)
Only a single wire is necessary to make a phone connection. What is the resistance (due to the earth) between the terminals
David is driving a steady 21.0 when he passes Tina, who is sitting in her car at rest. What is her speed as she passes him
A simple pendulum has a length of 52.4 cm and makes 83.7 complete oscillations in 2.00 min. Find the period of the pendulum
a bat emits a sound whose frequency is 90.7 khz. the speed of sound in air at 20.0 oc is 343 ms. however the air
A 6 m long 50 kg ladder leaning on a frictionless wall can successfully be scaled by a 120 kg man. find the minimum angle between the ladder and the floor
An electron is accelerated through 1.65 X 10^3 V from rest and then enters a uniform 1.30-T magnetic field. What is the minimum magnitude of the magnetic force this particle can experience
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