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A string is 50cm long. When ball is released from rest itswings along an arc. how fast is it going at lowest point on arc? (string/ball is initially to the right with a height of50cm.)
A 0.05 kg bullet traveling at 600 m/s hits a 7.4 kg block of wood and stays in the wood. What is the velocity (speed)of the wood block
From the difference in mass of a hydrogen atom (Appendix B) to the mass of a proton and an electron (Table 1.5), estimate the binding energy of the electron in the hydrogen atom. Compare this to the ionization energy of the ground state electron a..
Two vehicles approach a right angle intersection and then collide. After the collision, they become entangled. If their mass ratios were 1:3 and their respective speeds as they approached were both 13 m/s, find the magnitude and direction of the fina..
An airplane with a speed of 40 m/s isclimbing upward at an angle of 52°with respect to the horizontal. When the plane's altitude is840 m, the pilot releases a package. Calculate the distance along the ground,measured from a point directly beneath ..
An ambulance moving at 36 m/s sounds its siren whose frequency is 350 Hz. What frequency does a person in the car hear as the ambulance approaches the car
An electric generator contains a coil of 90 turns of wire formed into a rectangular loop 40.0 cm by 35.0 cm, placed entirely in a uniform magnetic field with magnitude B = 3.50 T and with Bvec initially perpendicular to the coil's plane. What is the ..
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. What is the pilot's apparent weight at the lowest point if his true weight is 160 lb
a surface completely surrounds a 4.7 10-6 c charge. find the electric flux through this surface when the surface is a
a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find the velocity of the projectile at the ground
A drop of water on a countertop reflects light from a flowerheld 3.5 cm directly above it. The flower's diameter is 2.5 cm, andthe diameter of the flower's image is 0.20 cm. What is the focallength of the water drop, assuming that it may be treate..
when the dried up seed pod of a scotch broom plant bursts open it shoots out a seed with an initial velocity of 2.4 ms
A computer CD-ROM drive that operates on 120 V is rated at 50W when it is operating. What is the drive's resistance
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