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A massless spring of constant k = 1000 N/m is fixed on the right side of a level track. A block of mass m = 1.50 kg is pressed against the spring, compressing it a distance d =20.0 cm. The block (initially at rest) is then released and travels toward a circular loop-the-loop of radius R = 1.50 m. The entire track and the loop-the-loop are frictionless, except for the section of track between points A and B. The coefficient of kinetic friction between the block and the track along AB is ?k = 0.250 and the length of AB is 3.00 m.a. Determine the speed of the block at point A.b. Calculate the speed of the block at point B.c. Find the speed of the block at point C. What is the minimum speed needed by the block at point C to make it around the top of the loop-the-loop? Will the block make it?
The emperical formula of an organic compound was found to be C3H7. find the molecular weight and molecular formula of the compound
Find time constant if the ball's amplitude has decreased to 2.20 cm after 51.0 oscillations? Explain your answer.
A mass-spring system oscillates with period of 0.23 sec. The spring's spring constant k = 450 N/m. What mass is attached to the spring
Relative to the ground, a car has a velocity of 16.8 m/s, directed due north, What is the magnitude of the truck's velocity relative to the ground
the football has a mass of .40kg and the quarterback that threw the ball accelerated it from rest to 25 m/s in a distance of .60m. what force did the player's hand exert on the ball
A solenoid of radius 4.5 cm has 600 turns and a length of 15 cm. Find the rate at which current must change through it to produce an emf of 60 mV
A uniform plank of length 5.5 m and weight 205 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support .To what distance x can a person who weighs 447-N walk on the overhanging part of the plank before it just ..
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, Determine the horizontal and vertical components of the launch velocity
Two radio-frequency point sources S1 and S2, separated by distance d = 1.6 m, are radiating in phase with ? = 0.4 m. How many maxima does it detect
An electron traveling to the left with velocity 5*10^5m/sec, and making an angle of 30 degrees with the horizontal, moves into a magnetic field of 1.0T directed toward the observer. what is the magnitude and direction of the magnetic force on the ..
A student throws a set of keys vertically upward to her sister in a window 4.0 m above. The keys are caught 1.5 s later by the sister’s outstretched h&. Find initial speed were the keys thrown?
On a summer morning in July in Houston Texas, the temperature is 80°F. A painter fills a 5.0 gallon aluminum container to the brim with turpentine. How much fluid spilled out of the container
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