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A 0.14- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. The coefficient of friction between the block and table is 0.30. The hammer's force on the block as a function of time is well approximated by an isosceles triangle with it's base on the horizontal time axis. The length of the base is 0.0063 s and the maximum force is 49.1 N. How far does the block go? Use a graphical technique.
A speed skater goes around a turn that has a radius of 27 m. The skater has a speed of 15 m/s, What is the mass of the skater
. Once the crate has started to move, expalin how large must F be in order to keep the crate moving at a constant speed?
The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.800, and the log has an acceleration of 0.800 m/s2. Find out the tension in the rope.
In a European country a bathroom scale displays its reading in kilograms. When a man stands on this scale, it reads 86.1 kg. find the magnitude of the force he exerts on the chin-up bar
A 66-g ice cube at 0°C is placed in 865 g of water at 26°C. What is the final temperature of the mixture
A power supply maintains a potential difference of 86.1 V across a 1070-? resistor. What is the current in the resistor
In an RLC circuit, the resistance is 10. ohms, the capacitive reactance is 30. ohms, and the inductive reactance is 50. Ohms. What is the circuit impedance
How much energy must be added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175celsious? assume that their initial temperature is 21 celsious, that specific heat capacity of popcorn is 1650 j/kgcelsious, and ..
A loop antenna of area A = 794.0 cm2 and resistance R = 4.000 ? is perpendicular to a uniform magnetic field B = 2.000 T. Find the total thermal energy dissipated in the loop
Vector A is 5.5 cm long and points along the x axis. Vector B is 7.5 cm long and points at +30° above the negative x axis. Determine the sum of these two vectors in terms of magnitude and direction
A simple model considers a continent as a block (density ? 2800 kg/m3), estimate the height of the continent above the surrounding mantle rock
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly ten months, how fast must you travel
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