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A truck is traveling at 11.1 m/s down a hill when the brakes on all four wheels lock. The hill makes an angle of 19.0° with respect to the horizontal. The coefficient of kinetic friction between
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing illustrates. The crest of the second hill is circular, with a radius of r = 34 m.
When an 81.0-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.25x10^3 J. By how much does the potential energy of a(n) 18
A 6100-kg satellite is in a circular earth orbit that has a radius of 2.7 x 10^7 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 5.6 x 10
The thrust of its engines is 2.30 x 10^5 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.60 x 10^7 J at lift-off. What is the work done on the jet by
A 2.90 x 102-N force is pulling an 90.0-kg refrigerator across a horizontal surface. The force acts at an angle of 19.0° above the surface. The coefficient of kinetic friction is 0.200, and the
A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 28.0 m. She pushes in a direction 23.0° below the horizontal. A 38.0-N frictional force opposes the motion of th
A particle has a spherically symmetric wave function φ(r) = Ae^(-r/a0) where A is a normalization factor and a0 is a known real parameter. Calculate momentum space wave function a(p)
A motor spins an 2 kg block around on an 80 cm arm at 200 rpm. The blosk is supported by a steel table after the motor stops. How long does the block take to come to rest? How many revolutions does
If the distance between the two mirrors is 0.90 m, how far in front of the eyepiece should you place the photographic film to record the image of a star?
A San Francisco cable car loses its brakes and runs down a hill 45 m high. The mass of the train and its passengers is 7,285kg. The final velocity of the train at the bottom of the hill is 4m/s. How
There are 200 students riding bikes each producing 110W of heat out put which is used for a heat engine which has an efficiency of 44.1% runing between 30c and -5c. what is the power in watts the he
A hunter who is a bit of a braggart claims that, from a distance of 1.8 km, he can selectively shoot eiither of two squirrels who are sitting 11 centimeters apart on the same branch of a tree.
The copper wire in a typical residential building has a cross-sectional area of 3.31 x 10-6 m2. If it carries a current of 10.0 A, what is the drift speed of the electrons?
Two capacitors, one 12.0 µf and the other of unknown capacitance, are connected in parallel across a battery of EMF 9.0 V. The total energy stored in the two capacitors is 0.0115 J. What is th
A 2.0μF capacitor and a 4.0μF capacitor are connected in series across 1000V. The charge capacitors are then disconnected from the source and connected to each other with terminals of like sig
The edges of a cube consists of equal resistors of resistance R, which are joined at the corners. Let a battery be connected to two opposite corners of a face of the cube. What is the efective resis
A 1.80 cm x1.80 cm parallel-plate capacitor has a 2.10 mm spacing. The electric field strength inside the capacitor is 1.00×10^5 V/m . What is the potential difference across the capacitor?
Two parallel metal plates have area A = 255cm2 and are sepearated by l= 0.50 cm. They have a potential difference of 0.25V. Find the numerical value of the electric field. What are the charge densi
A 28 kg block slides with an initial speed of 13 m/s up a ramp inclined at an angle of 20 degrees with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.6. Use
In a series R-L-C circuit, the phase angle is 40.0, with the source voltage leading the current. The reactance of the capacitor is 400 and the resistance of the resistor is 200 . The average power
A metal airplane with a wingspan of 29 flies horizontally along a north-south route in the northern hemisphere at a constant speed of 330 in a region where the vertical component of the Earth's mag
What must the potential difference between the plates be to hold the droplet in equilibrium?
The magnetic flux through one loop of wire is reduced from 0.39 to 0.19 in 0.30 . The average induced current in the coil is 13 . Can you determine the area of the loop from the data given?
Four point charges have the same magnitude of 1.9 x 10-12 C and are fixed to the corners of a square that is 6.4 cm on a side. Three of the charges are positive and one is negative. Determine the m