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Fossilized ichthyosaurusremains enable us to estimate their volume. If we assume that a 3 cubic metre icthyosaurus was "weightless" when it swam underwater. What was its weight in metric tonnes?
A cue stick hits a cue ball with an average force of 23.8 N for a duration of 0.0246 s. how fast is it moving after being struck
A current of 38.9mA flows in a silver wire of diameter 3.33 mm. Find the electric field strength inside the wire
What is magnitude of the momentum
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. find the speed of a satellite in geosynchronous orbit
A 7.80-g bullet moving at 480 m/s penetrates a tree trunk to a depth of 6.0 cm. Use work and energy considerations to find the average frictional force that stops the bullet
A small grinding wheel has a moment of inertia of 4.0×10-5 kg m^2. What net torque must be applied to the wheel for its angular acceleration to be 160 rad s^2.
A 35 microfarad capacitor is in series with a 250 ohm resistor and10V battery. Initally a switch in the circuit is open and the capcitor is uncharged. What is the current in the circuit immediately after the switchis closed?
The dipole moment of the water molecule is 6.1 * 10^-30 C * m. In an electric field, a molecule with a dipole moment will tend to settle into an equilibrium orientation such that the dipole moment is parallel to the electric field
A uniform thin rod of length 0.40 m and mass 3.0 kg can rotate in a horizontal plane about a vertical axis through its center. what is the bullet's speed just before impact
q1. as part of a safety investigation two 1300kg cars travelling at 18ms are crashed into different barriers. find the
A 0.042 kg aluminum bullet traveling at 456 m/s strikes an armor plate and comes to a stop. what is the bullet's temperature change in degrees Celsius
A 14 projectile is launched at 380 at a 55angle to the horizontal. At the peak of its trajectory it collides with a second projectile moving horizontally, Find the mass of the second projectile
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