Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
If a body travels half its total path in the last 1.70 seconds of its fall from rest, find the total time of its fall (in seconds). So far I know acceleration= -9.8 m/s^2 v(initial)= 0 and be
Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. The reflected light is a maximum only for 475.7nm and 666.0 nm in the visible spectrum.
Consider a completely isolated, thick, conducting infinite slab. one face-off the slab has a uniform surface charge density, s. 1. What is the electric field of the slab?
The radius of a typical human eardrum is about 4.2 . Find the energy per second received by an eardrum when it listens to sound that is at the threshold of hearing.
A 72 nC charge is located at x=3.00 meters on the x axis and an 8.0nC charge is located at x=7.0 meters. At what point on the x axis is the electric field zero? Please explain this answer and draw i
Initially (at time t = 0) a particle is moving vertically at 6.1 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.2 m/s2 . At what time will the particle be traveling 44 degrees with
Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N acting due east and the other is 8.0 N acting 62 degrees north of west. What is the magnit
You select a rental package that includes a car with an average consumption of 6.00 of fuel per 100 . Considering that in Europe the average fuel cost is 1.063 , how much (in US dollars) will you sp
Initially (at time t = 0) a particle is moving vertically at 4 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.2 m/s2 . At what time will the particle be traveling at 43o with respec
A highey curve forms a section of a circle. A car goes around the curve. Its dashboard compass shows that the car os intially heading due east. After it travels d=840m, it is heading of an angle of
A speedboat starts from rest and accelerates at +2.01 m/s2 for 7.30 s. At the end of this time, the boat continues for an additional 6.10 s with an acceleration of +0.518 m/s2. Following this, the boa
Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from 9 m/s to 17 m/s? How much time is required for
If 0.186 kg of chromium is deposited on a bumper in 105 min, what is the current passing through the bath? The molar mass of chromium is 0.0520 kg.
The Moon has a mass of 7.36 x 1022 kg and a radius of 1.74 x 106 m. (a) What is the acceleration due to gravity on the Moon?
A proton is located at the origin, and a second proton is located on the x-axis at x=6.00 fm. (a) Calculate the electric potential energy associated with this configuration.
A sprinter explodes out of the starting block with an acceleration of +3.6 m/s2, which she sustains for 1.2 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity at
If the specific heat of the water is 4200 J/kg·K over this temperature range, what is the resistance of the coil? Ignore any changes in the resistance of the coil due to the increase in tempe
A section of wire 10.0 m long has a resistance of 4.00 O. (a) What is the resistance of 25.0 m of this wire? (b) What is the resistance of a 10.0 m section of wire of the same material with half the
A microscope can resolve as two distinct objects of features that are no closer than the wavelength of the light or electrons used for the observation. what photon energy would be required of an opt
Water flows at 0.885 m/s through a hose with a diameter of 2.92 cm, and then exits through a nozzle with a diameter of 0.75 cm. Water leaves the nozzle at a speed of 13.4 m/s. What volume of water
A mechanic is raising a car with a hydraulic lift. The smaller piston has radius of 15 cm while larg piston has radius of 85 cm. To raise a 1800 kg car 1.4m how much forc must mechanic apply to pis
A boat has a mass of 6800kg. Its engines generate a drive force of 3750N, due west, while the wind exerts a force of 790N, due east, and the water exerts a resistive force of 1200N due east. What is
A .5 m length of rigid metal rod is connected through two springs ( with 10 N/m spring constants) perpendicular to the rod at either end, to a circuit that supplies 2.5 A of current through the wir
Determine the R value for a wall constructed as follows: The outside of the house consists of lapped wood shingles placed over 0.50 in. thick sheathing, over 4.0 in. of cellulose fiber, over 0.50 in