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When the resistors are connected in parallel to the battery, the total current from the battery is 9.74 A. Determine the two resistances.
A block of mass 2.10 kg is pushed 2.24 m along a frictionless horizontal table by a constant 19.0 N force directed 27.7o below the horizontal. a) Determine the work done by the applied force.
Two resistors, 54.6 and 83.9?, are connected in parallel. The current through the 83.9-? resistor is 2.84A. (a) Determine the current in the other resistor. (b) What is the total power supplied to
(a) the salmon's acceleration Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 10%. Double check your calculations. m/s2 upward (b) the magnitude of th
(a) Show that the intensity I (the energy crossing unit areaper unit time) is the product of the energy per unit volume u and the speed of propagation v of the wave disturbance.
. The angle of elevation q is increased slowly from the horizontal. At what value of q does the block begin to slide (in degrees)? What is the acceleration of the block?
Write the equation for a wave traveling in the negative direction along the x-axis and having amplitude0.010-m, a frequency 550Hz, and a speed 330m/s.
Two pieces,having equal mass, fly off perpendicular to one another with the same speed of 30 m/s The third pieces has three times the mass of each other piece. What is direction and magnitude of its
What would be the power output of an electric generating plant if it could convert all of the water's potential energy to electrical energy? How many kilowatt-hours of electrical energy could be pro
The speed of an automobile traveling due to east is uniformaly reduced from 75.0km to 45.7km/h in a distance of 88.5m. (A) What is the magnitude and direction of the constant acceleration?
A hockey puck on a frozen pond with an initial speed of 18.9 m/s stops after sliding a distance of 240.3 m. Calculate the average value of the coefficient of kinetic friction between the puck and t
What is the mass of the spaceship and the acceleration due to gravity at the surface of Planet X? Assume that the acceleration due to gravity is constant.
An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. In the process, the electron acquires a speed ve, while the proton acqui
The electric field midway between two equal but opposite point charges is 747 N/C, and the distance between the charges is 28.7 cm. What is the magnitude of the charge on each?
An electron acquires 3.14 * 10-16 J of kinetic energy when it is accelerated by an electric field from plate A to plate B. What is the potential difference between the plates, and which plate is at
The electric field of a charge is 1.37e+07 N/C at a distance 16.3 cm and points away from the charge. What is the sign and magnitude of the charge?
An oxygen ion, with charge 2e, starts from rest on the surface of one plate and accelerates to the other. If e denotes the magnitude of the electron charge, the final kinetic energy of this ion is:
An object moves with constant acceleration 4.50 m/s2 and over a time interval reaches a final velocity of 11.2 m/s. (a) If its initial velocity is 5.6 m/s, what is its displacement during the time int
Suppose the second distance d were traveled in the opposite direction; you forgot something and had to return home at the same constant speed as found in part (a). What is the average velocity for t
A person walks first at a constant speed of 4.80 m/s along a straight line from point circle a to point circle b and then back along the line from circle b to circle a at a constant speed of 3.15 m
a) Find the resistance of a 1.3m length of gold wire with diameter 4.2×10^-5m . Express your answer to two significant figures and include the appropriate units.
Two coconuts fall from rest at the same time, one from a tree twice as high as the other. 1-If the coconut from the taller tree reaches the ground with a speed , what will be the speed (in terms of )
A rigid container holds 0.20 of hydrogen gas. How much heat is needed to change the temperature of the gas from 50 K to 100 K? How much heat is needed to change the temperature of the gas from 250 K
A 4.0-g bullet leaves the muzzle of a rifle with a speed of 326 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.79-m-long barrel of the rifle?
When you quickly move the nozzle away from the vertical, you hear the water striking the ground next to you for another 1.4s What is the water speed as it leaves the nozzle?