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A 1.65 kg mass is placed on the end of a spring that has a spring constant of 195 n/m . The mass–spring system rests on a frictionless incline that is at an angle of 30 degrees from the horizontal The system is eased into its equilibrium position, where it stays.
a) Decide the change in elastic potential energy of the system. (answer in J)
B) Decide the system’s change in gravitational potential energy. ( answer in J)
A juggler throws a ball from height of 0.950 m with a vertical velocity of +3.75 m/s and misses it on the way down. What is its velocity when it hits the ground
the electric field 0.340 m from a very long uniform line of charge is 650 nc. how much charge is contained in a 2.00-cm
A cannon of mass 1500 kg fires a 10-kg shell with a velocity of 200m/s at an angle of 45? above the horizontal. Find the recoilvelocity of the cannon across the level ground.
A student weighing 800 N crouches on a scale and suddenly springs vertically upward.His roommate notices that the scale reads 900 N, With what acceleration does he leaves the scale
an alternating rc circuit is constructed from a 331+/- 3 uF capacitor and a 15+/-.15 ohm resistor connected in series with an alternating voltage source that has a frequency of 100 Hz. Determine phase angle between the supplied EMF and the current..
A 60 (g} tennis ball with an initial speed of 32 {m/s} hits a wall and rebounds with the same speed. The figure shows the force of the wall on the ball throughout the collision.
An adventurous archaeologist crosses between two rock cliffs. If the angle between the rope and the horizontal is = 11.8, find out the tension in the rope.
A person takes a trip, driving with a constant speed 90 km/h except for a 15 minute rest stop. If the person's average speed is 45 km/h, how far does the person travel
Oppositely charged parallel plates are separated by 5.35 mm. A potential difference of600 V exists between the plates. What is the magnitude of the electric field strength between the plates?
An extension cord made of two wires of diameter 0.129cm (no. 16 copper wire) and of length 2.2m is connected to an electric heater which draws 17.0 A on a 120V- line, How much power is dissipated in the cord
At 18°C, a brass cube has an edge length of 32 cm. What is the increase (in square cm) in the cube's surface area
the speed of a nerve impulse in the human body is about 100 ms. if you accidentally stub you toe in the dark estimate
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