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Suzy the elephant weighs 65,000 N. The cross-sectional area of each foot is 0.10 m2. When she stands on all fours, what is the average stress on her feet? (b) Suzanne the stockbroker weighs 610 N.
A fruit fly experiment, two gray-bodied fruit flies produce mostly gray-bodied offspring , but some of the offspring have black bodies. If there are 280 offspring, how many will you predict will have
A climber with a mass of 75 kg is attached to a 6.5 m rope with a cross sectional area of 3.5×10-4 m2. When the climber hangs from the rope, it stretches 3.4×10-3 m. What is the Young's
The plane of the loop is perpendicular to the direction of the magnetic field. What is the magnitude of the induced emf in that loop?
At rest, a car's horn sounds at a frequency of 370 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a f
What is the work function of this metal in eV ?(Notice that the stopping potential is the potential difference required to bring the electrons with the maximum kinetic energy to a complete stop.) in
Suppose that you carry out the experiment in the water (refractive index n = 1.33). If a light ray of a wavelength 513 nm (in air) is incident perpendicularly upon the grating (immersed in water), w
What is the distance between these particles at this time? The Coulomb constant is 8.98755 × 109 N · m2/C2, the elemental charge is 1.6021 × 10-19 C, and the accel- eration due to
The third-order bright fringe is seen at an angle of 22.9 degrees from the center of the interference pattern. What is the separation between the centers of the double slits?
An astronaut exploring a distant solar system lands on an unnamed planet with a radius of 3700. When the astronaut jumps upward with an initial speed of 3.20, she rises to a height of 0.600.
Check this speed with the result you get from simple conservation of energy considerations. Consider the Earth's mass density to be uniform throughout. [Hint: recall Gauss' Law as it applies to the
The interference pattern has its first dark fringe (the one adjacent to the central maximum) at the same angle. What is the distance between the centers of the two slits?
A child's helium-filled balloon escapes at sea level and 21oC. When it reaches an altitude of 3000 m, where the temperature is 3oC and the pressure only 0.6 atm, what is the ratio of the initial volum
What are the block's oscillation frequency? What is the block's distance from equilibrium when the speed is 36 cm/s? What is the block's position at t=1.0 s?
The process of osmoregulation is used to control the solute concentration and water balance of fluids which bathe the body cells (eg. interstitial fluid). Considering the basic model for excretion in
Two 2.0-cm-diameter insulating spheres have a 7.00 cm space between them. One sphere is charged to + 13.0 nC, the other to - 20.0 nC. What is the electric field strength at the midpoint between the
Three moles of a monoatomic ideal gas are placed in a portable container with a volume of 0.0038 m3. The temperature of the gas is 290°C. What is the average kinetic energy per molecule? in J
If 6.00 moles of a monatomic ideal gas at a temperature of 360 K are expanded isothermally from a volume of 1.25 L to a volume of 5.61 L, calculate the heat flow into or out of the gas? in J
Evaluate at = 3.2 . What is the average angular velocity between = 2.0 and =3.2 ? What is the average angular acceleration between = 2.0 and =3.2?
Explain the principles of nonmaleficence, beneficence, autonomy and justice. Use examples for each?
The effects of pH and temperature were studied for an enzyme-catalyzed reaction.
You're in an airplane that flies horizontally with speed 1000lkm/h (280 m/s) when an engine falls off. Neglecting air resistance, assume it takes 30 s for the engine to hit the ground.
The top of Mt. Everest is 8850 m above sea level. Assume that sea level is at the average Earth radius of 6.38×106 m. What is the magnitude of the gravitational acceleration at the top of Mt.
It then smoothly slows down and stops after rotating through 3/4 of a turn. Find the frictional torque that acts to stop the wheel.
Car accelerated as as stop light changes. the cars linear motion is 0-10 m/s in 10 s annd the diameter of a tire is .85 m what is the final angular velocity of the tire on the car? what is the angu