Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
An object weighing 307 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 270 N. Immersed in oil, the object weighs 282 N. Calculate the density o
A camel sets out to cross the desert, which is 20.2 km wide in the north-south direction. The camel walks at the uniform speed 1.81 km/hr along a straight line in the direction 58.1 north of East (o
A "gauge 8" jumper cable has a diameter d of 0.326 centimeters. The cable carries a current I of 30.0 amperes. The electric field E in the cable is 0.062 newtons per coulomb. What is the material o
A spring has a force constant of 595 N/m and an unstretched length of 6 cm. One end is attached to a post that is free to rotate in the center of a smooth table, as shown in the top view below. The
A 2.0 mL syringe has an inner diameter of 4.0 mm, a needle inner diameter of 0.21 mm, and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses the syringe to inject medicine
A damped harmonic oscillator consists of a block (m = 1.84 kg), a spring (k = 9.08 N/m), and a damping force (F = -bv). Initially, it oscillates with an amplitude of 24.1 cm; because of the damping
a 75 kg man is at a position 7 meters up an 8 m uniform bar with a mass of 50 kg. If the 15 kg mass is hung at a position 4.5 m from the wall, find the tension in the cable connected 6 meters up the
A Carnot engine performs work at the rate of 420 kW while using 690 kcal of heat per second. If the temperature of the heat source is 550°C, at what temperature is the waste heat exhausted?
If you weigh 690 {rm N} on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 21.0 {rm km}?
At a distance of 3.7 m from a siren, the sound intensity is 3.50 10-2 W/m2. Assuming that the siren radiates sound uniformly in all directions, find the total power radiated ?
Volcanoes on the Earth eject rocks at speeds of up to 140 m/s. Consider a 1250 m high volcano which ejects rocks in all directions. What is the maximum height above sea level reached by rocks?
A mass of 0.53 kg attached to a vertical spring stretches the spring 37 cm from its original equilibrium position. The acceleration of gravity is 9.81 m/s2 . What is the spring constant?
Tarzan is running at top speed of 5 m/s grabs a vine hanging from a tree. How high can he swing upward on the vine? (Hint: mass doesn't matter)
In order to clearly read a book 29 cm away, a farsighted girl needs an image to be 32 cm from her eyes. What focal length is needed for the lens in her eyeglasses?
in millikan's experiment, an oil drop of radius 1.64 micrometers and density 0.851 g/cm^3 is suspended in a chamber when a downward electric field of 1.20 x 10^5 N/C is applied. Find the charge on t
A ferrari race car on a straight road starts from rest,accelerating at 2.00 m/s^2 until it reaches a speed of 20.0m/s.Then the car travels for 20.0 s at constant speed until the brakes are applied,s
Three equal point charges, each with charge 1.15 , are placed at the vertices of an equilateral triangle whose sides are of length 0.600 . What is the electric potential energy of the system? (Take
A steel wire with mass 25.4 g and length 1.53 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m (a) Compute the linear density of the string.
A submarine is 305 m horizontally out from the shore and 146 m beneath the surface of the water. A laser beam is sent from the submarine so that it strikes the surface of thewater at a point 218 m m
A jetliner is moving at a speed of 218 m/s. The vertical component of the plane's velocity is 60.9 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
The mass of a water molecule is 2.99x10-26 kg. If the mass of a person is 59 kg, estimate the number of water molecules in that person.
A 0.370-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 19.2 N/m. The block rests on a frictionless surface. A 0.0500 kg wad of putty is t
Find and plot the streamlines coming out of the left and bottom boundaries, x=0 and y=0. Find the net force exerted on the fluid inside the box by summing the momentum flow rates out through each of
A 12g bullet is fired horizontally into a 100g wooden block initially at rest on a horizontal surface. After impact, the block slides 7.5m before coming to rest. if the coefficient of kinetic fricti
A 65.0 kg person throws a 0.0450 kg snowball forward with a ground speed of 30.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is in