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A block of weight 3.9N is launched up a 30 degrees inclined plane 2.10m long by a spring with k = 2.15kN/m and maximum compression 0.10m. The coefficient of kinetic friction is 0.50. How much kinetic energy does it have there?
A diffraction grating with 610 lines per mm is illuminated with light of wavelength 520nm . A very wide viewing screen is 2.1m behind the grating. How many bright fringes can be seen on the screen
A total of 34 bright and 34 dark Newton's rings (not counting the dark spot at the center) are observed as 550 -nm light falls normally on a planoconvex lens resting on a flat glass surface. How much broad is the center than the edges.
A shopper walks from the door of the mall to her car 310m down the lane of cars, then turns 90° to the right and walks an additional 70m. What is the magnitude of the displacement of her car from the mall door.
A ranger in a national park is driving at 52 km/h when a deer jumps onto the road 86 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.9 m/s2.
The magnetic field inside the solenoid in the figure changes at the rate of1.4T/s. A conducting coil with 2000 turns surrounds the solenoid, as shown. The radius of the solenoid is6cm, and the radius of the coil is7cm. What is the potential differenc..
A ball is kicked with an initial velocity of 15 m/s in the horizontal direction and 14 m/s in the vertical direction. For how long does the ball remain in the air
A child's water pistol shoots water through a 1.8 mm-diameter hole. If the pistol is fired horizontally 78 cm above the ground, the squirt hits the ground 1.8 m away. What is the volume flow rate through the squirt? Ignore air resistance.
A wire runs through a 0.7 T magnetic field as shown. The dashed lines represent the magnetic field, and the solid black line the wire. What is the magnitude of the current through the wire
Consider the RC-circuit with R = 3 k%u03A9, C = 100 %u03BCF, and E = 12 V and a switch. At t = 0 the capacitor is empty and the switch is closed to the charging begins. Calculate the time constant of the circuit
A 75kg hiker climbs to the top of a 4000m -high mountain. The climb is made in 5.0h starting at an elevation of 3000m. Calculate the average power output in horsepower
question1suppose you clarify two thin slits by monochromatic coherent light in air and find out that they create their
A car of mass 1200kg is heading east at 10m/s. A second car of mass 1500kg is heading west at 20.0m/s. They meet in an elastic collision. What was the initial kinetic energy of the system
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