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A piece of ice of mass 0.0240 kg at an initial temperature of-11.0o C is placed in a well-insulated cup containing0.100 kg of water at 35.0o C. Calculate the equilibrium temperature of this system in degrees Celsius.
Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car
Battery-powered electricity is very expensive compared with that available from a wall receptacle. Estimate the cost per kWh of an alkaline D-cell
q1. to calculate the program suppose she runs up a flight of 85 steps each 0.150 m high in 69.0 s. for ease ignore an
Your favorite physics book (total mass 2.4kg) is pushed across the floor at a constant speed by a force of F = 26N at an angle (theta)= - 42 degrees (aiming downward 42 degrees below the horizontal). Determine the coefficient of kinetic friction ? k ..
suppose that a cart is given a push up the ramp and released. it moves up, reverses direction, and comes back down again. how will the mechanical energy change
What is an average magnitude of the Pointing vector 5.0miles from a radio transmitter broadcasting isotropically with an average power of 250-kW?
Consider a capacitor C being discharged through a resistor R as shown in figure a. The initial potential difference across the capacitor is 24.0 V, Compute the initial charge and time constant
a 2.1-m-long vertical pole extends from the bottom of a swimming pool to a point 50.0 cm above the water. What is the length in meters of the shadow of the pole on the level bottom of the pool
A stationary particle of charge q = 2.5 x 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 2.6 x 103 W/m2. find the magnitude of the magnetic forces exerted on the particle
The image of a very distant car is located 35 cm behind a convex mirror. What is the radius of curvature of the mirror
The work function for Zinc is 4.31 eV. Find the cutoff wavelength for zinc and what is the lowest frequency of light incident on zinc
On a workday the average decibel level of a busy street is 72.0 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 50 every minute on a weekend, what is the decibel level of street.
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