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Block 2 (mass 1.30 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 259 N/m. The other end of the spring is fixed to a wall. Block 1 (mass 1.10 kg), traveling at speed v1 = 4.30 m/s, collides with block 2, and the two blocks stick together. When the blocks momentarily stop, by what distance is the spring compressed?
A uniform disk of radius 0.519 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
Water flows in a vertical pipe of 0.15 m diameter at a rate of 0.25 m3/s , and has a pressure of 250 kPa at an elevation of 25 m. Determine the velocity head and pressure head at elevations of 20 m and 50 m.
A reaction has been designed to be carried out in a 2 ml total volume. It requires a final NAD concentration of 3 mM. If the protocol allows 60 µl for the NAD addition, what concentration would you make up the stock solution
To avoid handling the powder form of this compound you decide to make up the whole bottle rather than attempt to weigh out a portion. The compound comes in 200 mg batches. What volume would you add to one of these bottles to make up a 10 mM soluti..
A capacitance C and an inductance L are operated at the same angular frequency. A) At what angular frequency will they have the same reactance? Express your answer in terms of the variables C and L. B) If L = 5.30mH and C = 3.40\mu F , what is the nu..
In 0.975 s, a 14.1-kg block is pulled through a distance of 3.32 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
Two objects with masses of 3.90 kg and 6.20 kg are connected by a light string that passes over a frictionless pulley, as in the figure below. (The figure shows a pulley with the two objects on opposite sides hanging vertically) (a) Determine the ..
Calculate delta G in Joules/mol at 25 C when concentration of [H] is .00000010 M and [OH] is 1.0 x 10^-11.
A horizontal wire rod is free to slide on a vertical conducting. The wire has mass 7 kg and length 7 m, find the terminal velocity of the wire
A 0.79-kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
At the instant of engine burnout, the rocket has risen to 52 m and acquired a velocity of 40 m/s. The rocket continues to rise in unpowered flight, reaches most height and falls back to the ground.
A girl with mass m1 and a sled with mass m2 are on the frictionless ice of a frozen lake, How far from the girl's initial position do they meet
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.08 km. What is the direction (relative to due east) of the couple's displacement
The magnitude of earth's magnetic field is 50.0 µT and makes an angle of 30° with the plane of the coil. Assume a patient takes 1.50 s to inhale, find the magnitude of average induced emf in the coil during that time.
If the mass of the child and sled is 40 {rm kg}, what average force do you need to apply to stop the sled? Use the concepts of impulse and momentum.
q1. a 60 m ladder leans against a wall. what is the minimum force of friction essential to prevent the ladder from
A penny is dropped form the observation deck of the empire state building (369m above the ground). With what velocity does it strike the ground
a pelican flying along a horizontal path drops a fish from a height of 5.4m. the fish travels 8.0m horizontally before
A 35 N hand and forearm are held at a 45 degree angle to the vertically oriented humerus. how much force must be exerted by the forearm flexors to maintain this position
q1. a student pulls a box of books on a smooth horizontal floor with a force of 100 n in a direction of 37 degrees
A ball is initially at rest in your hand. You then accelerate your hand upwards at 20 m/s2 for 0.1 s and release the ball. How far a distance did you lift the ball through
Compute the average linear velocity of the discus
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