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The scale of a spring balance reading from 0 to 250{N} has a length of 11.0{cm}. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.80{Hz}. What is the mass of th
Consider two thin concentric conducting spherical shells (the outer shell and the inner shell) with radius a and b, respectively. We deposit charge q on the outer shell and -2 q on the inner shell.
The falls are approximately 108 m high. If the river is flowing horizontally at 3.60 m/s just before going over the falls, what is the speed of the water when it hits the bottom? Assume the water is
A river flows toward the east. Because of your knowledge of physics, you head your boat 44° west of north and have a velocity of 8.0 m/s due north relative to the shore. (a) What is the velocity
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 900 m, horizontal distance 19.9 km, and 25.0° south of west. The second aircraft is at altitude 1300
Calculate the linear speed due to the Earth's rotation for a person at a location of 40 degrees N latitude of the Earth. The radius of the rotation at this location is 5.00x10^6m.
An electric field of 2.60 × 105 V/m is desired between two parallel plates each of area 23.0 cm2 and separated by 0.250 cm of air. What charge must be on each plate?
A 15 g rifle bullet traveling 250 m/s buries itself in a 3.0 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Determine the horizontal component of the p
A plane leaves the airport in Galisto and flies 135 km 68 degrees east of north and then changes direction to fly 219 km at 48 degrees south of east, after which it makes an immediate emergency land
What is the unstretched length of the spring? What would be the length of the spring if an additional 0.8 kg was added?
A loudspeaker of mass 24.0 {rm kg} is suspended a distance of h = 1.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.10 {rm m}.
A wire carries a current of 6.0 A in a direction that makes an angle of 24.0° with the direction of a magnetic field of strength 0.100 T. Find the magnetic force on a 4.00 m length of the wire.
A 48 kg skier skis directly down a frictionless slope angled at 5° to the horizontal. Assume the skier moves in the negative direction of an x axis along the slope. A wind force with component F
You and your friends push horizontally with a force F. Once the crate has started to move, how large must F be in order to keep the crate moving at a constant speed?
A hot iron horseshoe (mass=0.40 kg), just forged is dropped into 1.60 L of water in a 0.30-kg iron pot initially at 20 degree celsius. If the final equilibrium temperature is 25.0 degree cesius, es
Your expression should give 3.0 m/s for and your answer to part A for theta. Express your answer in terms of theta. Make a graph of v versus theta for one complete revolution.
In a 25.0 set, the ghost is about 1.00 to the right of the principal image if the reflected signal arrives 0.800 after the principal signal.In this case, what is the difference in the distance trave
A novice skier, starting from rest, slides down a frictionless 33.0° incline whose vertical height is 124 m. How fast is she going when she reaches the bottom?
In a performance test, each of two cars takes 9.0 s to accelerate from rest to 27 m/s. Car A has a mass of 1400 kg, and car B has a mass of 1900 kg. Find the net average force that acts on each car
An elastic cord is 67 cm long when a weight of 58 N hangs from it but is 86 cm long when a weight of 78 N hangs from it. What is the "spring" constant k of this elastic cord?
An 9.00 {rm kg} point mass and a 15.0 {rm kg} point mass are held in place 50.0 {rm cm} apart. A particle of mass m is released from a point between the two masses 19.0 {rm cm} from the 9.00 {rm kg}
Two particles are fixed on an x axis. Particle 1 of charge q1=2.3x10-8 C at x=20.0 cm and particle 2 of charge q2= -4.50q1 at x=70 cm. At what coordinate (i.e., x value) on the axis is the net elect
The surface of the water 2.50 m from the point directly above the flashlight. What angle (in air) does the emerging ray make with the water's surface?
A dog pulls on a pillow with a force of 39 N at an angle of 52° above the horizontal. Find the x and y components of this force.
In the reflections, fully destructive interference occurs at 600 nm and fully constructive interference at 750 nm. Calculate the thickness of the acetone film.