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An immersion heater used to boil water for a single cup of tea plugs into a 120V outlet and is rated at 300W. What is the resistance of the heater?
A 46.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.44 102 m/s from the top of a cliff 162 m above level ground, where the ground is taken to be y
At the point of fission, a nuclear of 235U that has 92 protons is devided into two smaller spheres, each of which has 46 protons and a radius of 5.90*10^-15m. what is the magnitude of the repulsive
The professor speed at the bottom of the ramp is 1.75m/s. use the work-energy theorem to find his speed at the top of the ramp.
Findmagnitude of the electric force acting on each ball: i) the . ii) the tension in each of the threads. iii) the magnitude of the charge on the balls.
A simple pendulum makes 103 complete oscillations in 3.10 min at a location where g = 9.80 m/s2. Find the period of the pendulum.
The power rating on a light bulb indicates how much power it would dissipate when it is hooked up to the standard household voltage of 120 V (this rating does not mean that the light bulb always di
Find a) the speed of the disk's center of mass when it reaches the bottom of the ramp and b) the angular speed of the disk at the bottom of the ramp.
You are given a concave mirror with focal length 40.0cm. Draw the system and use the mirror equation to determine the characteristics of the image.
suppose the height of the ramp is h1=0.3 m, and the foot of the ramp is horizontal, and is h2=1.00 m above the floor. what will be the horizontal distancec traveled by the following four objects bef
What are the magnitude and direction of the electric field 25.1 cm directly above an isolated 43.5 multiplied by 10-6 C charge?
After the collision, balls B and C have the same speed, 4.2 m/s, but ball B moves at an angle of 22 above the horizontal and ball C moves at an angle of 22 below the horizontal. What is the velocity
The second mass is located 40 south of east, and the transducer sensitivity is 0.5 volts/Newton, how large a voltage do you expect to measure?
If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation window (radius = 0.12 m)?
The rocket moves for 3.00 s along its initial line of motion with an acceleration of 29.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile. Find the maximum altit
A gymnast of mass 59.0 hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value for the acceleration of grav
A spherical balloon containing helium gas has a radius of 12.0 cm. If the balloon is at atmospheric pressure and room temperature, what is the mass of helium in the balloon? (Let the temperature be
While a man is riding the bicycle, the temperature of the tire increases to 45°C. Assuming the volume of the tire does not change, what is the gauge pressure in the tire at the higher temperature
A child holds a candy bar 26.0 cm in front of a convex mirror and notices that the image is only one half the size of the candy bar. What is the radius of curvature of the mirror?
Water at a pressure of 3.4 atm at street level flows into an office building at a speed of 0.5 m/s through a pipe 7 cm in diameter. The pipes taper down to 2.6 cm in diameter by the top floor, 28 m
The weight of a certain crown in air is 14 N and its weight in water is 12.7 N. assuming that the uni weight of water is 9.79 KN/m3 and the crown is an alloy of gold (sp. gr. =19.3) and silver (sp.
How many different disulfide pairing arrangements are possible? Derive a general formula for the number of different pairing arrangements when there are n cysteins.
A 28 gram rifle bullet traveling 230 m/s buries itself in a 3.6 kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal com
The magnitude of vector vector A is 31.6 units and points in the direction 321° counterclockwise from the positive x-axis. Calculate the x-component of this vector.
A 1700 kg car traveling at a speed of 19 m/s skids to a halt on wet concrete where f_k = 0.60. how long is the cars skid marks?