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An object 12.0 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4.00 cm tall, and locat
a 59kg man walks from one end of a 3.2m 160kg boat to the other. if there is no friction between the boat and the water and the man's starting position is x=0, what is the final position of the man
A house is 100.0 ft long and 20 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimeters?
A horizontal pipe contains water at a pressure of 150 kPa flowing with a speed of 2.0 m/s . The pipe narrows to one-half its original diameter. a) What is the speed of the water? (in m/s) b) What i
A parallel-plate capacitor with circular plates of radius 0.12 m is being discharged. A circular loop of radius 0.28 m is concentric with the capacitor and halfway between the plates. The displacem
The acceleration of gravity is 9.8 m/s2. How far can he throw the same ball vertically upward with the same initial speed?
An object 9.0 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4.00 cm tall, and located
A charge of 3 C is placed at the point (4.0 m, 0.0 m) and a charge of 3 C is placed at the point (3.0 m, -3.0 m) . What is the magnitude of the electric field (in N/C) at the point (-2.0 m, 3.0 m)?
the first car accelerates at constant rate of 2.5 m/s^2 for a certain amount of time and then maintains a constant speed until it catches up to the second car. the total time involved is 60 s. how f
What minimum distance should the top speaker be moved back in order to create destructive interference between the speakers?
The maximum wavelength for which an electromagnetic wave can eject electrons from a platinum surface is 196 nm. When radiation with a wavelength of 151 shines on the surface, what is the speed of t
Tarzan swings down from a tree branch on a 36m long vine initially inclined at 42 with the vertical. What is his speed at the bottom of the swing if he starts at rest?
Black oil reservoirs at 250 deg F+, could there be oil cooking going on releasing some of the light and or intermediats that result in some disequilibreum under reservoir conditions (Pb vs depth co
Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 83.0 m and the coe
A cube of ice is taken from the freezer at -8.5 C and placed in a 95-g aluminum calorimeter filled with 310 g of water at room temperature of 20.0 C. the final situation is observed to be all water
In a 100 m race, Maggie and Judy cross the finish line in a dead heat, both taking 11.4 s. Accelerating uniformly, Maggie took 1.80 s and Judy 2.90 s to attain maximum speed, which they maintained
A 51 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 245 N. For the first 12 m the floor is frictionless, and for the next 11.5 m the coefficient of fricti
An 18 g rifle bullet traveling 210 m/s buries itself in a 3.9 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal comp
On a workday the average decibel level of a busy street is 73 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 40 every minute on a weekend, what is the dec
At the same time, a 30N force at an angle of 60 degrees above the horizontal pulls on the cart to the left. What is the magnitude of the horizontal acceleration of the cart?
A curve of radius 70m is banked for a design speed of 75 km/h. If the coefficient of static friction is 0.40 (wet pavement), at what range of speeds can a car safely make the curve?
A net force of 265 N accelerates a bike and rider at 2.30 m/s2. What is the mass of the bike and rider together?
A barefoot field-goal kicker imparts a speed of 18 m/s to a football initially at rest. If the football has a mass of 0.47 kg and the time of contact with the ball is 0.021 s, what is the force exer
An electron and a proton each have a thermal kinetic energy of 3×kBT/2. Calculate the de Broglie wavelength of each particle at a temperature of 2050 K. (kb is Boltzmann's constant, 1.38&time
A block of copper of mass mCu whose temperature is TCu is placed in an insulating box with a block of lead of mass mPb and temperature TPb. (a) What is the equilibrium temperature of the two-block s