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A person pulls a 26 kg suitcase using a rope attached to the suitcase at an angle of 28 degrees to the horizontal. The coefficient of static friction of the suitcase with the floor is 0.3 and the co
A sound source at a frequency of 500 Hz has an acoustic power of 1/10 of a watt. How do you find the intensity 1/2 a m from the source, the pressure amplitude, and the magnitude of the specific aco
After a 0.380-kg rubber ball is dropped from a height of 1.95 m, it bounces off a concrete floor and rebounds to a height of 1.45 m. Determine the magnitude and direction of the impulse delivered to
A uniform plank of length 5.0 m and weight 211 N rests horizontally on two supports, with d = 1.17 m of the plank hanging over the right support. To what distance, x, can a person who weighs 412 N
An air-filled parallel-plate capacitor has plate area A and plate separation d. The capacitor is connected to a battery that creates a constant voltage V. Find the energy U_0 stored in the capacito
Two identiocal batteries of emf 11.9 v and internal resistance 0,276 ohm are to be connected to an external resistance R either in series or parallel; if R =0.492 ohm, what is the current in the ex
What energy transfers take place during the hydrologic cycle? i keep getting different answers. Conduction, convection, radiation as well as latent heat of fusion and latent heat of vaporization.
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 200 m in diameter, what is the x component of this runner's average velocity between points A and B
A magnetic field of 0.8 T is perpendicular to a square coil of 10 turns. The length of each side of the coil is 8 cm. Find the magnetic flux through an individual turn of the coil.
Express your answer in terms of the speed v2 of the water as it leaves the faucet, the magnitude g of the acceleration due to gravity, and the distance h of the water between the faucet and the lowe
A hoop of radius 0.200 m and mass 0.470 kg, is suspended by a point on it2s perimeter. if the hoop is allowed to oscillation side to side as a pendulum, what is the period of the oscillation?
The combined mass of the sleigh and team is 390kg. What is the average power generated by the team during the initial push-start acceleration phase?
A Carnot engine performs work at the rate of 470 kW while using 650 kcal of heat per second. If the temperature of the heat source is 590°C, at what temperature is the waste heat exhausted?
Explain how the operation of a simple machine alters the force and the distance moved
Mass 15 grams is excited in a resonant mode with four nodes and three antinodes(the third harmonic , n=3). what tension T is the string under if the frequency of this resonance is f= 44 Hz?
What is the angular momentum of the disk after the cord end has been pulled through a distance 3 meters if the disk starts from rest?
A 16.0 -kg box is released on a 35^circ incline and accelerates down the incline at 0.10 m/s^2. Find the friction force impeding its motion and what is the coefficient of kinetic friction?
Find the magnitude of the emf induced in the loop after exactly time 6.00 has passed since the circumference of the loop started to decrease.
A positive charge of 8.33 x 10^-5 C experiences a force of .109 N when located at a certain point. What is the electric field intensity at that point?
Two charged bodies exert an electrostatic force of 144 N on each other. If the distance between them is quadrupled and the magnitude of one charge is cut in half, what is the new force between them
What is the direction of the force exerted on Jenny's car during the collision and what is the direction of the acceleration of Jenny's car during the collision?
Find a formula for a electrical flux on a sphere for a point charge at the center of the sphere with a hole in the sphere.
A proton (mass m = 1.67 10-27 kg) is being accelerated along a straight line at 3.6 1015 m/s2 in a machine. The proton has an initial speed of 2.4 107 m/s and travels 3.5 cm. What is the speed and
Be sure to describe forces by name and mention charging by induction, conducting, or rubbing, if it is appropriate. Also explain what atoms on Mars must be composed of.
An object on a screen positioned 5 m from the object. (a) What type of mirror is required? (b) Find p,q,f and R (c)Draw a ray diagram.