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A projectile is fired horizontally from a gun that is 50.0 m above flat ground, emerging from the gun with a speed of 140 m/s. (a) How long does the projectile remain in the air? (b) At what horizo
In plaque assay- what is meant by the term "indicator" or host organism? Why are some bacterial strains phage sensitive and phage resistant?
A small rocket, of the sort that the high school boys built in the 1998 movie ''October Sky'', has a mass, M. From Newton's Second Law, write a first- order differential equation for the vertical velo
A 3.28-kg bucket is attached to a disk-shaped pulley of radius 0.108 m and mass 0.727 kg. If the bucket is allowed to fall, what is its linear acceleration? What is the angular acceleration of the pul
What percent of the american population has unattached earlobes verses attached
You pull with a force of 275 N on a rope that is attached to a block of mass 28 kg, and the block slides across the floor at a constant speed of 1.7 m/s. The rope makes an angle of 30 degrees with
Two narrow slits are 20 wavelengths apart are illuminated with light of wavelength lambda. What is the angle of the bright fringe in radians between the central maximum and the m=1 and m=-1 bright
Consider a supertanker, with a mass of 7.0×10(8) {rm kg}. If it is pushed by a rocket motor (force 4.0×10(8 {rm N}) and is subject to no other forces, what will be the magnitude of its a
Calculate the tension in the rope if the gymnast climbs up the rope with an upward acceleration of magnitude 1.30. Calculate the tension in the rope if the gymnast slides down the rope with a downward
We now place it in a circular orbit, such that the radius of the orbit is 5.0 times the radius of the earth. What is the force of gravity on the satellite now?
A stone thrown upward from the top of a 108 ft cliff at 132 ft/sec eventually falls to the beach below. How long does the stone take to reach it's highest point?
The mass of each section is 80 kg. A person pushes on the outer edge of one section with a force of F = 72 N that is directed perpendicular to the section. Determine the magnitude of the door's angu
If the string is 9.5 {rm m} long, has a mass of 35 g and is pulled taut with a tension of 7.0 N, how much time does it take for a wave to travel from one end of the string to the other?
A softball player swings a bat, accelerating it from rest to 2.8 in a time of 0.30 . Approximate the bat as a 2.6- uniform rod of length 0.92 , and compute the torque the player applies to one end
What minimum constant acceleration does the aircraft require if the aircraft is to be airborne after a takeoff run of 222 m?
A second charge, q2 = -3.00 micrcoulombs, is on the x-axis 0.800 m from the origin. Find the electric field at a point on the y-axis 0.500 m from the origin.
What is the displacement of a particle at position x = 2.7 m at time t = 5.8 s? Note: Remember that the argument of the sine function in the wave equation is expressed in radians.
The magnitude of the magnetic field varies with time as given by B = 50 sin(10 πt) mT where t is measured in s. What is the magnitude of the induced current in the coil at 0.10 s? draw physics di
For the worst case scenario, assume that there is no frictional force between the car and road due to the ice. If the maximum compression of the spring from its equilibrium position is D, your job i
The resistor in an circuit has a resistance of 145 ohms. What capacitance must be used in this circuit if the time constant is to be 3.4 ms ? Using the capacitance determined in part (a), calculate
A 71-kg skier is going down a slope oriented 30° above the horizontal. The area of each ski in contact with the snow is 0.13 m2. Determine the pressure that each ski exerts on the snow.
Velocity of 2.52 throws a .151 snowbal to the right with a velocity of 33.7 relative to the ground. what is the velocity of the ice skater after throwing the snowball?
A library ladder of length L rolls on wheels as shown in the figure below. The two legs of the ladder freely pivot at the hinge at the top. The legs are kept from splaying apart by a light-weight c
Which events must occur first to trigger the skeletal muscle to generate an action potential and contract
A 15.4 kg block is dragged over a rough, horizontal surface by a constant force of 187 N acting at an angle of angle 26.6 above the horizontal. The block is displaced 9.41 m and the coefficient of