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Two blocks are connected by a very light string passing over a massless and frictionless pulley (Fig. E6.7). Traveling at constant speed, the 20.0-N block moves 75.0 cm to the right and the 12.0-N block moves 75.0 CIJl downward. During this process, how much work is done (a) on the 12.0-N block by (i) gravity and (ii) the tension in the string') (b) On Ihe 2(l.()-N block by (i) gravity,(ii) the tension in the string. (iii) friction, and (iv) the normal force') (cl Find the total work done on each block.
A soccer player kicks a ball toward a wall 15.0 m away, with velocity 25.0 m/s at 30.0 above the horizontal. Determine how high up the opposite wall the ball hits, and nd the impact velocity
question1a source emits 531.62-nm and 531.81-nm light.awhat least number of grooves is required for a grating that
Two point charges of -1microC and 2microC are separated by a distance of 0.30m. What is the electrostatic force on each particle
Each of two small non-conducting spheres is charged positively, the combined charge being 40 µC. Determine the magnitude of the smaller of the two charges
A 135 mCi radioactive tracer is made in a nuclear reactor. When it is delivered to a hospital 18 hours later its activity is 85 mCi. The lowest usable level of activity is 10 mCi. What is the tracer's half-life
An experiment is performed aboard the International Space Station to verify that linear momentum is conserved during collisions in a zero-g environment. What is your prediction for the speed, V, for the combined honey drop after the collision
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles
The image of a tree on a 35 mm color slide is 1 mm high. It is to be projected onto a screen 3 m from the slide, and is to appear 328 mm high. What is the magnification of the system
A 120 granite cube slides down a 40 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 290 steel cube at rest. How high above the table should the granite cube be released to give steel cube a spe..
A ball thrown upward returns to the same level after 4s in the air. How long would that ball take to reach the same level
What is the mass of nitrogen in an nitrogen tank at 20C if the tank has a volume of 0,20m^3 and nitrogen pressure in the tank is 4,0 x 10^6 N/m^2
A 6 ornament is hanging by a 1.30 wire when it is suddenly hit by a 3.00 missile travelling horizontally at 10.0. The missile embeds itself in the ornament throughout the collision.
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