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an artillery piece is aiming at a target on a cliffacross a river. the horizontal distance of the target from the gunis 300 meters. the gun has a muzzle velocity of 67 m/s andhas to be fired at an angle 31degrees to hit the target. nelgectair resistance.
A. what is the maximum height reached by the shell fired from the gun?
B. when does the projectile reach the target?
C. how high is the cliff?
Calculate the total number of electrons in a coin of mass of 3.00 grams made of pure copper. Each copper atom has 29 electrons, its atomic weight is 63.5 grams, and density is 8.9 gram / cm^3.
A cork ball of mass 1.20 g is placed between two very large horizontal planes of charge. The bottom plane has a uniform charge density of +0.68 uC/m2, What is the charge on the ball
Derive a formula for the linear velocity of a planet v(r), where r is the distance from Sun (assume circular orbits). Apply your formula to Earth (r ' 150 *10^6 km). Compare v with the number which follows from the observed period of 1 year.
A damped mass-spring system oscillates at 275-Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 3.20cm and the energy of the oscillating system is then 32 J.
The wavelength associated with the cut-off frequency for silver is 325 nm. Find the maximum kintetic energy of electrons
1-µC point charge is located at x = 1.1 m, y = 2.8 m, and a -3.9-µC point charge is located at x = 2.3 m, y = -1.9 m. Find the magnitude and direction of the electric field at x.
A 2.50-kg stone is dropped from rest at a height of 3.75 m. What impulse does gravity impart to this stone from the instant
A uniform disk with mass 39.5kg and radius 0.250 m is pivoted at its center about a horizontal, frictionless axle that is stationary. What is the magnitude a of the resultant acceleration of a point on the rim of the disk
What is the electric potential energy of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)" Use = 8.85 10 12 for the permittivity of free space.
The deepest place in all the oceans is the Marianas Trench, where the depth is 10.9 km and the pressure is 1.10×10^8Pa. by how much does its volume decrease
A 12 volt battery is connected in series with a 100,200 and 300 resistors. Find the current in the loop and the voltage drop across each resistor
Janet has a 40% interest in the S corporation. All expenses that reduce DPGR are from wages, and all wages paid relate to DPGR. Explain how much QPAI and wages are allocated to Janet?
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