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Water flows through a horizomtal tube of length 25cm and internal diameter 1 mm under a constant head of the liquid 15cm high. If a volume of 72,5 cm3 of water issues from the tube in 10 minutes, C
After the collision, the pendulum and object stick together and swing to a maximum angular displacement, theta. (a) Find the initial velocity of the pendulum. (b) Find the maximal angle, theta
how fast can you drive on a horizontal roadway around a right turn of radius 30.0 m before the cup starts to slide? If you go too fast, in what direction will the cup slide relative to the dashboard
After the collision, the 5-kg cart is moving to the right with a speed of 1.5 m/s. What is the final velocity of the 3-kg cart?
(a) Do the satellites move with acceleration? Write down the second law of Newton for their motion. (b) Using (a) write down the expression for the period of rotation (orbital period), T, as a funct
The block is initially at rest at its equilibrium position when a force (magnitude P = 80 N) acting parallel to the surface is applied to the block. What is the speed of the block when it is 13 cm f
A certain string just breaks when it is under 25 N of tension. A boy uses this string to whirl a 2-kg stone in a horizontal circle of radius 3 m. The boy continuously increases the speed of the ston
A 2.0-kg block slides on a frictionless 15 degree inclined plane. A force acting parallel to the incline is applied to the block. The acceleration of the block is 1.5 m/s^2 down the incline. What is
(a) Why does the dime slide outward? (b) What is the coefficient of static friction between the dime and the record?
Consider light that is refracted by a prism shaped like an equilateral triangle. The incident ray is parallel with the prism's base. What is the total deflection of the ray, given that the index of
Two parallel metal plates have area A = 255 cm2 and are separated by l = 0.50cm. They have a potential difference of 0.25 V. Find the numerical value of the electric field. What are the charge dens
The machine flash a warning for the technician if the information to configure the launch is incorrect (Explain why). Show how you calculate the angle of particle one and the angle of particle two.
Consider a uranium nucleus to be a sphere of radius R = 7.4 × 10-15 m with a charge of 92e distributed uniformly throughout its volume. (a) What is the electric force exerted on an electron wh
The charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. Find the charge on each capacitor and the voltage across each capacitor
A box is released from rest on a frictionless ramp at a vertical height of 2m. At the bottom of the ramp the horizontal surface has a coefficient of kinetic friction of .04. At what distance D along
A car of mass 1500 kg is travelling at 30km/hr along a level icy road when the motorist enters a curve (unbanked) of radius 10m. The coefficient of friction between the tires and the road is 0.05.
A 20 kg box rests on a 35 deg ramp. The coefficients of static and kinetic friction are 0.75 and 0.45, respectively. What force up the ramp is required to:
A string with linear mass density of 0.141 kg/m is under a tension of 103 N. How much power must be supplied to the string to generate a sinusoidal wave of amplitude 1.69 cm and frequency 117 Hz?
An 8.4 kg crate is pulled 4.8 m up a 30° incline by a rope angled 18° above the incline. The tension in the rope is 125 N, and the crate's coefficient of kinetic friction on the incline is
A resistor connected across an AC power supply has a current given by I=(1.05 A)cos{(300t)} when connected to a power supply with emf 120 V rms. A) Find the rms current. B) Find the resistance. C) F
A student makes a simple ac generator by using a single square wire loop 14 cm on a side. The loop is then rotated at a frequency of 60Hz in a magnetic field of 1.9×10^-2 Tesla . What is the m
A sample of serum has a mass of 54 mg and a volume of 225 cm^3. What is its density in g/cm^3? What would be the mass of 150 fluid ounces of this serum? What would be the volume of 1 pound of this s
If a car traveled at an average speed of 80 km per hour for 20 minutes, and then slowed to an average speed of 50 lm per hour over the next 15 minutes. How far would it travel in total?
A home receives 1.7 kW of electric power from a transformer on a nearby pole. The line from the substation to the transformer is at 9.0 kV and has 0.10 \Omega resistance. What fraction of the power
A 2800 kg space vehicle, initially at rest, falls vertically from a height of 3000 km above the Earth's surface. Determine how much work is done by the force of gravity in bringing the vehicle to the