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what maximum height above the ground will the rocket achieve? The acceleration of gravity is 9.8 m/s2 . Answer in units of km.
In terms of A_1, what is the amplitude for the same driving frequency and the same driving force amplitude F_{max}, if the damping constant is 3b_{1}?
The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m.(a) What is the block's speed when it is at a height of 0.25 m above the base of the slid
A charge of 1.50×10-8 C lies on an isolated metal sphere of radius 16 cm. With V = 0 at infinity, what is the electric potential at points on the sphere's surface?
A 0.25 kg length of aluminum wire is warmed 10.0°C by an electric current. How much heat was generated by the current?
The objects are released from rest, and m2 slides 1.00m down the incline in 4.00s. Determine (a) the acceleration of each object, (b) the tension in the string, and (c) the coefficient of kinetic fr
Two 9.0 cm diameter charged disks face each other, 25 cm apart. Both disks are charged to - 80 nC. What is the electric field strength at the midpoint between the two disks?
A gas expands when 619 J of energy is added to it by heat. The expanding gas does 442 J of work on its surroundings. What is the overall change in the internal energy of the gas? Answer in units of
The 22 cm long gardening tool shown here is used to pull weeds. If a 1.23 N•m torque is required to pull a given weed, what force did the weed exert on the tool?
A spring is stretched as shown at right and released at position x=0.1m at time t=0. The mass is 3kg and the spring constant is given by k=27N/m. Assume a frictionless system. (a) Find the angular f
A simple generator has a 620-loop square coil 21.0 cm on a side. How fast must it turn in a 0.690 T field to produce a 140 V peak output?
A 360 kg bear grasping a vertical tree slides down at constant velocity. What is the friction force that acts on the bear?
The period of the planet's motion about the star is 658 days. What is the mass of the star? The value of the universal gravitational constant is 6.67259 × 10-11 N · m2/kg2.
a ball is dropped from the top of a 50 meter high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of a cliff w/ a speed of 24 meter/sec. The stone and ball col
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is v1 = (6.50) ihat + (4.00 m/s) jhat, measured on a horizontal xy coordinate system
If the decibel level is 0 dB at a distance of 1.0 m from the door, at what distance is the music just barely audible to a person with a normal threshold of hearing?
A car crashes into a wall at 50 m/s and is brought to rest in 0.1 s. Calculate the average force exerted on a 85 kg test dummy by the seat belt.
you swing a 3.00kg stone in a circle, using the full length of a thin 70.0 cm rope. at what speed should you swing it so its acceleration will be 9.8 m/s/s.
The entire system is initially rotating at 0.180. Find the angular velocity if the child moves to a final position 1.10 from the center of the merry-go-round.
The coefficients of static and kinetic friction for plastic on wood are 0.50 and 0.40, respectively. How much horizontal force would you need to apply to a 3.0 N plastic calculator to start it movin
A force vector has a magnitude of 590 newtons and points at an angle 44o of below the positive x axis. What are (a) the x scalar component and (b) the y scalar component of the vector?
A 11 g bullet is fired into a 12 kg wood block that is at rest on a wood table. The block, with the bullet embedded, slides 5.0 {rm cm} across the table. The coefficient of kinetic friction for woo
The boomhangs at angle 58 above the horizontal, and the cable is per- pendicular to the boom. An object of weight 2159 N hangs on another cable attached to the boom's free end. Find the tension T i
At one instant, the center of mass of a system of two particles is located on the x-axis at x = 2.0 {rm{ m}} and has a velocity of (5.0 {rm{ m/s}} ) hat i. One of the particles is at the origin. The
An airplane is flying with a velocity of 88.0 at an angle of 22.0 above the horizontal. When the plane is a distance 119 directly above a dog that is standing on level ground, a suitcase drops out