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A spelunker is surveying a cave. She follows a passage 150m straight west, then 290m in a direction 45° east of south, and then 280 m at 30° east of north. After a fourth unmeasured displacement, s
If a bullet that leaves the muzzle of a gun at 324 m/s is to hit a target 84.0 m away at the level of the muzzle, the gun must be aimed at a point above the target. How far above the target is this
A charge of -2.55 nC and a charge of -5.25 nC are separated by a distance of 40.0 cm. Find the position at which a third charge of +7.90 nC can be placed so that the net electrostatic force on it i
A rifle with a weight of 30 N fires a 5.0-g bullet with a speed of 300 m/s. (a) Find the recoil speed of the rifle. (b) If a 700- N man holds the rifle firmly against his shoulder, find the recoil
The largest passenger ship still in service is the SS Norway, which has a mass of 7.6 × 107 kg. The force required to accelerate the SS Norway from rest to its top cruising speed of 33 km/h is
The bullet strikes the block and becomes embedded in it. After the collision the combined object swings on the end of the cord. When the block has risen a vertical height of 0.825 m, the tension in
Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar.
A 4 kg body moving with a speed of 2 m/s collides with a spring bumper of negligible mass and force constant 100 N/m. What is the maximum compression of spring?
The Stanford linear accelerator contains hundreds of brass disks tightly fitted into a steel tube (see figure). The coefficient of linear expansion of the brass is 2.00 10-5 per C. The system was a
In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N .Find the acceleration of the sled and child.
The reason the colored rays are dispersed so that you can see individual colored rays is due to the (index of reflection/index of refraction/index of polarization) is different for each color of th
If the slit separation is increased by a factor of 3, what would be the distance between the principal peaks on the screen?
When the block has risen a vertical height of 0.825 m, the tension in the cord is 4.60 N. What is the initial velocity of the bullet.
A plastic rod is rubbed with a cloth, and in the process it acquires a charge of -2.3×10-8 C. A) Did the mass of the rod increase or decrease?
A train at a constant 46.0 km/h moves east for 41.0 min, then in a direction 51.0° east of due north for 21.0 min, and then west for 51.0 min. What are the (a) magnitude and (b) angle (relative
Light that contains all wavelengths between 464 and 636 nm shines on the grating. Calculate the width of the dark area between the first and second order spectra on a screen 3.3 m away.
Assess each of the four main types of airfoils for function and purpose. Note: Be sure to include how each impacts lift and drag, as well as what type of aircraft is best suited for each. Provide t
When the first team uses its GPS to check the position of the second team, what does it give for the second team's (a) distance from them and (b) direction, measured from due east?
A cowboy fires a silver bullet with a mass of 2.00 g and with a muzzle speed of 200 m/s into the pine wall of a saloon. Assume that all the internal energy generated by the impact remains with the b
The hunter wishes to move neither up-stream nor downstream while crossing the river? Draw the vectors to scale on a graph to determine the answer.
A disk of hot gold of 3kg mass and 99c temperature is dropped into 0.22kg of water at 25c determine the specific heat of the gold if the final equilibrium temperature being 47c?
What is the minimum amount of energy required for an 80 kg climber carrying a 20 kg box to climb Mount Everest, 8 850 m high?
A coefficient of kinetic friction on snow of 0.11. Unfortunately, the skis run out of fuel after only 15. How far has he traveled when he finally coasts to a stop.
After going through a bad break-up with his significant other, a young man ends up drinking half a case of beer. The next day, he decides the cloud of despair must be fought with exercise. How much
Suppose you were performing the same experiment on this crate but were doing it on the moon instead, where the acceleration due to gravity is 1.62 m/s squared. What the magnitude push would cause it