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03.3 A boat is heading upstream when a float is dropped overboard and carried downstream. What is the boat's speed in still water?
Party stores sell small tanks containing 40 g of helium gas. If you use such a tank to fill 0.012 m^3 foil balloons, how many balloons can you expect to fill
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. How much power is radiated from each panel
a bullet moving horizontally to the right (+x direction) with a speed of 500 m/s strikes a sandbagk, What is the average acceleration in m/s of the bullet
It is important for the body to have mechanisms to effectively cool itself; if not, by how much would his body temperature rise during this exercise
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. What is the power of one laser pulse
The attractive electrostatic force between the point charges 7.14×10?6 and has a magnitude of 0.825, find the sign and magnitude of the charge Q
A cylinder with a piston contains ½ mole of an ideal gas initially at pressure 4.0 x105 Pa and temperature 300K. Compute the maximum pressure
You are standing on a scale inside an elevator. The scale reads 23 percent less than your weight. obtain the acceleration of the elevator
A bird stands on a dc electric transmission line carrying 2800 A. find the potential difference between the bird's feet
What diameter must a copper wire have if its resistance is to be the same as that of an equal length of aluminum wire
This is a two part question. Ron runs west for 30 minutes at a speed of 8 mi/h. What is the total distance that Ron has run
A person who weighs 656 N is riding a 91-N mountain bike. compute the area of contact between each tire and the ground
If you were standing on a spinning turntable holding barbells close to your chest, how would your spin be affected? Why?
On the planet Zardem, the standard unit of time is the Zarsec, or Zs, where 1 Zs = 2.2s. how fast is the runner traveling
At Earth location, the intensity of sunlight is 1.5 kW/m2. by how much would Earth's mass increase in 1 day
A 13.8-g piece of Styrofoam carries a net charge of -0.72 µC and is suspended in equilibrium above the center of a large, determine the charge per unit area on the plastic sheet
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, find the horizontal and vertical components of the launch velocity
A 35.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. evaluate the magnitude of the electric field
A parallel plate capacitor of capacitance 7.2 µF has the space between the plates filled with a slab of glass with ? = 3.5. Find the capacitance after the glass is removed
A large parallel plate capacitor has plate separation of 0.85 cm and plate area of 391 cm2. How much work is done on the capacitor as the plate separation is increased to 1.70 cm
The temperature of the air in a resonator is 15°C, when a tuning fork vibrates at one end, calculate the frequency of the tuning fork
Two conductors having net charges of +15.0 µC and -15.0 µC have a potential difference of 15.0 V between them, obtain the capacitance of the system
An object of mass b has a speed that changes with distance d according to v = bx^-n. What is the force as a function of time
If a person exerts 44 N of force on the back of a seat while stopping in 0.4 seconds, what is the impulse on the seat back