Answer: In Exercises 7–14, use the method in Example 3 to

University Physics 13
Problem 88CP CALC? A projectile thrown from a point P moves in such a way that its distance from P is always increasing. Find the maximum angle above the horizontal with which the projectile could have been thrown. Ignore air resistance.

Fundamentals of Physics 10
In Fig. 5-64, a force of magnitude 12 N is applied to a FedEx box of mass m2 " 1.0 kg. The force is directed up a plane tilted by u " 373. The box is connected by a cord to a UPS box of mass m1 " 3.0 kg on the floor. The floor, plane, and pulley are frictionless, and the masses of the pulley and cord

Physics: Principles with Applications 6
(II) In a Rotor-ride at a carnival, people are rotated in a cylindrically walled room. (See Fig. 535.) The room radius is 4.6 m, and the rotation frequency is 0.50 revolutions per second when the floor drops out. What is the minimum coefficient of static friction so that the people will not slip down

Fundamentals of Statistics 4
Problem 15AYU Problem DUI Simulator To illustrate the effects of driving under the influence (DUI) of alcohol, a police officer brought a DUI simulator to a local high school. Student reaction time in an emergency was measured with unimpaired vision and also while wearing a pair of special goggles

Chemistry 7
In each of the following groups of substances, pick the one that has the given property. Justify your answer. a. highest boiling point: HBr, Kr, or Cl2 b. highest freezing point: H2O, NaCl, or HF c. lowest vapor pressure at C: Cl2, Br2, or I2 d. lowest freezing point: N2, CO, or CO2 e. lowest boiling

American Government
The Supreme Court has decided that the death penalty ________. a. is always cruel and unusual punishment b. is never cruel and unusual punishment c. may be applied only to acts of terrorism d. may not be applied to those who were under 18 when they committed a crime

Chemistry: The Molecular Nature of Matter and Change 5
The mineral galena is composed of lead(II) sulfide and has an average density of 7.46 g/cm3. (a) How many moles of lead(II) sulfide are in 1.00 ft3 of galena? (b) How many lead atoms are in 1.00 dm3 of galena?

College Physics: Explore and Apply 2
A monkey has a cart with a horizontal spring attached to it that she uses for different tricks. In one trick, the monkey sits on the vibrating cart. When the cart reaches its maximum displacement from equilibrium, the monkey picks up a 0.30-kg cantaloupe from a trainer. The mass of the monkey and the