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A race car rounds a curve at 51 m/s. The radius of the curve is 444 m, and the car's mass is 700 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.)
(a) What is the car's (centripetal) acceleration?
(b) What is it in g's? (enter value to 3 decimal places)
(c) What is the centripetal force acting on the car?
In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 530nm, What is the work function of this material
A parallel-plate capacitor is made of two flat metal plates pressed against a thin slab of dielectric material. What is the dielectric constant of the material that was initially used to fill the gap between the plates
If it takes a fish 0.20s to perform evasive action, at illustrate what minimum height must it spot the pelican to escape? Assume the fish is at the surface of the water.
A racquetball with a diameter of 5.6 cm and a mass of 42 g is cut in half to make a boat for American pennies made after 1982. How many pennies can be placed in the racquetball boat without sinking it
When a metal is irradiated with 410-nm photons, the stopping potential is 1.2 eV. Find the cutoff wavelength (in nm) for this metal
A tsunami is generated by an earthquake off the coast of Alaska. It has a wavelength of 677 km. It travels at a distance of 3536 km in a period of 5.49 hr. What is the frequency of the wave in Hz?
A uniform charge density of 680 nC/m3 is distributed throughout a spherical volume of radius 6.00 cm. What is the electric flux through this cubical surface if its edge length is 3.30 cm
An astronaut travels from a distant star to the Earth at speed 0.992c. What is the distance from the star to the Earth as measured by an observer on the Earth
In a double-slit experiment, slits separated by 1.240e-4 meter are illuminated by a coherent 571 nanometers light source. Obtain the angular position of the first bright fringe
two ice skaters with masses of 53.5 kg and 75.9 kg are at the center of a 56.28-m-diameter circular rink. the skaters
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. What is the magnitude of the electric field in the membrane
A drug tagged with 9943Tc (half-life = 6.05 h) is prepared for a patient. what is its activity (R) after it has been on the shelf for 2.0 h
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