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A slingshot consists of a light leather cup containing a stone. The cup is pulled back against two parallel rubber bands. It takes a force of 15 N to stretch either one of these bands 1.0 cm.
(a) What is the potential energy stored in the two bands together when a 42-g stone is placed in the cup and pulled back 0.25 m from the equilibrium position?
(b) With what speed does the stone leave the slingshot?
A vertical straight wire carrying an upward 21-A current exerts an attractive force per unit length of 8.3×10?4N/m, What is the magnitude of the current in the second wire
A 111 gram apple falls from a branch that is 3.5 meters above the ground, How much time elapses before the apple hits the ground
Rope BCA passes through a pulley at point C and supports a crate at point A. Rope segment CD supports the pulley, What is the angle required for equilibrium?
A 20 wood ball hangs from a 1-long wire. The highest tension the wire can withstand without breaking is 600. A 0.90 projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectile can have with..
a) Write an expression for the magnitude of the force, F, that propels the dragster forward in terms of the variables provided. b) If the track has length L, select the correct symbolic equation for how fast Vf the dragster is traveling when it fi..
A projectile is fired with muzzle speed 150m/s, Where does the projectile hit the ground with what speed
Consider the circuit shown in the figure below, where C1 = 2.00 µF, C2 = 9.00 µF, and ?V = 18.0 V. Calculate the final charge on each capacitor
Electromagnets that produce large magentic fields use water cooling to prevent excessive heating of the magnet's coils. How many liters of water must circulate by the coils each second if the temperature of the coils is not to exceed 49°C
A dentist uses a small mirror of radius 44mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 13 mm from the tooth, what is magnification of the image.
A 4.86 g bullet moving with an initial speed of vi = 439 m/s is fired into and passes through a 1.06 kg block. The block, initially at rest on a frictionless horizontal surface, is connected to a spring with the spring constant of 832 N/m.
A spherical shell has an outside radius of 2.55 cm and an inside radius of a. The shell wall has uniform thickness, What is this maximum mass
Two capacitors are connected parallel to each other. Let C1 = 3.50 ?F, C2 = 5.50 ?F be their capacitances, Calculate the potential difference across each capacitor: V1 = and V2 =
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