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What is the acceleration of the projectile when it reaches its maximum height? What is the magnitude of the projectile's velocity just before it strikes the ground.
A 3.4 k and a 2.4 k resistor are connected in parallel; this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W (maximum without overheating), what is the
An electron is traveling through a uniform electric field. The field is constant and given by {bf{vec E}} = left( {2.00 times 10^{ - 11} {rm{N/C}}} right){bf{hat i}} - left( {1.20 times 10^{ - 11}
The level at which it was hit. If the center fielder is initially 1.10 X 10^2 meters from home plate, what must be his average speed?
A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of
An angle of 75 degrees with respect to the horizontal surface of the water. Determine her initial velocity, both magnitude and direction?
A 15 g stone is tied to the end of a string and moves in a horizontal, circular path. The radius of the circle is 1.0 m. The stone makes 325 complete revolutions in 20 s. What is the tension in the
The edge of a cube consist of equal resistors of resistance R, which are joined at the orners, let a battery be connected to two opposite corners of a face of cube. What is the efective resistance?
The police at the scene of the accident note that the point of impact is 130 meters from the base of the cliff. How fast was the car traveling when it when over the cliff?
A physics student in a hot air balloon ascends vertically at constant speed. Consider the following four forces that arise in this situation: F1 = the weight of the hot air balloon F3 = the force of
A spotlight on a boat is a = 2.5 m above the water, and the light strikes the water at a point that is x = 8.0 m horizontally displaced from the spotlight (see the drawing). The depth of the water
A small object rests on the bottom of the cistern at its center. How far from the edge of the cistern can a girl whose eyes are 1.2 m from the ground stand and still see the object?
A small fly of mass 0.10 g is caught in a spider's web. The web vibrates predominately with a frequency of 9.0 Hz. What is the value of the effective spring stiffness constant k for the web?
Draw a sketch of the situation and a force diagram of the suitcase, labeling all forces clearly. With what force does the woman have to pull to start the suitcase moving from rest?
A 500 turn solenoid with a length of 20 cm and a radius of 1.5 cm carries a current of 3.0 A. A second coil of four turns is wrapped tightly about this solenoid so that it can be considered to have
Pipe y is closed at one end and also produces a note of frequency 28Hz when the air in the pipe vibrates in its fundamental mode. The best estimate for the length of pipe y is?
A 3.50-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70.0 kg construction worker stands at the far
After what interval does the snowball hit the tree? At what height above the ground will the snowball hit the tree? Determine the snowball's velocity as it strikes the tree.
In a ballistics test, a 24.0 g bullet traveling horizontally at 1100 m/s goes through a 40.0 cm-thick 450 kg stationary target and emerges with a speed of 800 m/s. The target is free to slide on a
What is the minimum coating thickness needed to ensure that light of wavelength 590 nm and of perpendicular incidence will be reflected from the two surfaces of the coating with fully constructive i
A 4.5 kg fish swimming 3 m/s swallows an absent minded 1 kg fish swimming toward it at a velocity that brings both fish to a halt immediately after lunch. What is the velocity v of the smaller fish
The sun had the same mass that it presently does and that the earth moved in a circular orbit having the same radius as its present orbit?
An electron is moving at a speed of 1.0 104 m/s in a circular path of radius of 2.1 cm inside a solenoid. The magnetic field of the solenoid is perpendicular to the plane of the electron's path. Th
A 950 kg sports car collides into the rear end of a 2100 kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.1 m before stopping. The police offi
The specific heat capacity of air is approximately 1000.0 J/kg * degrees C, and the density of air is approximately 1.29 kg/m^3.