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Find the maximum height above the ground reached by the shell. (c) How long does it take for the shell to reach the ground? (d) What is the speed of the shell at this time?
Write a full description on what you know about the theory and applications of transformers. Illustrate your writing by drawing diagrams. Include in your writing a description ofd power transmission
How about the length of an oak board in the same conditions. (These temperatures are about 0 to 100 degrees F.) About how much of a change in length in inches do you get for each?
The drive force is then shut off. Find (a) the distance in which the snowmobile coasts to a halt and (b) the time required to do so
Find the distance from the wall to the point on the roof where the ball lands.
Assume that all of the kinetic energy is transformed into heating the chunk of iron. Find the temperature change in degrees Celsius.
An airplane is flying with a velocity of 95.0m/s at an angle of 18.0^circ above the horizontal. When the plane is a distance 104m directly above a dog that is standing on level ground, a suitcase d
Find the radius of the largest water drop that could be supported in the earth's electrostatic field. assum that the drop is spherical.
An object weighs 284 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 225 N. When it is immersed in oil, it weighs 264 N. Find the density of the object.
What is the minimum time before the asteroids projected impact that the spaceship must reach the asteroid. Explain carefully.
Assume that light of wavelength 550 nm is being observed. Also assume that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the maximum dista
You have a mass of 74 kg and are on a 51-degree slope hanging on to a cord with a breaking strength of 212 newtons. What must be the coefficient of static friction to 2 decimal places between you a
Compressed 3.53 cm as the car is brought to rest. What was the speed of the car before impact, assuming no energy is lost in the collision with the wall?
Observable A is measured, and the value a1 is obtained. What is the state of the system immediately after this measurement?
Two stars are 3.3 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.00 m and just detects these stars as separate objects. Assume that ligh
Evaluate the energy at the observed interatomic distance in metallic Na, and use 0.78 eV as the electron affinity of Na.
A mass m moves in one dimension x subject to a restoring force -kx and a damping force -γ[(x)dot]. What are the conditions for underdamped oscillations, overdamped oscillations, and critical d
How do you calculate this without knowing the mass?
A motorcyclist driving in a 60 zone hits a stopped car on a level road. The cyclist is thrown from his bike and lands 45 down the road. Find the minimum speed he could have been going just before t
A temperature of 20.1 oC is placed in a refrigerator where the temperature is kept at 2.4 oC. How much heat is transferred from the water to cool it to the lower temperature?
The distance between the front and rear tires is an integer multiple of the wavelength of the sine curve. Find the amplitude of oscillation of the automobile, assuming it moves vertically as an unda
Consider the exaggerated case of a feather, not a ball, because the effect of air resistance on the feather is pronounced and therefore easier to visualize.)
In a conversion from military to peacetime use, a missile with a maximum horizontal range of 180km is being adapted for studying the upper atmosphere. What is the maximum altitude it can achieve if
When a bullet fires in a gun, the explosion subsides quickly. Suppose the force on the bullet is F(t) = F0 - βt^2 until the force is zero, and then zero thereafter. Assume F0 = 357 N and &beta
A motor has an armature resistance of 5 Ohms. If it draws 10.5 A when running at full speed and connected to a 130 V line, how large is the back emf?