Without actually computing the orders, explain why the two

College Physics 1
A football quarterback is moving straight backward at a speed of 2.00 m/s when he throws a pass to a player 18.0 m straight downfield. (a) If the ball is thrown at an angle of 25 relative to the ground and is caught at the same height as it is released, what is its initial speed relative to the groun

Fundamentals of Physics 10
Two particles are fixed on an x axis. Particle 1 of charge 40 mC is located at x # $2.0 cm; particle 2 of charge Q is located at x # 3.0 cm. Particle 3 of charge magnitude 20 mC is released from rest on the y axis at y # 2.0 cm.What is the value of Q if the initial acceleration of particle 3 is in th

Process Dynamics and Control 3
In a thermostat control system for a home heating system (a) Identify the manipulated variable (b) Identify the controlled variable (c) How is a valve involved in the control system? What does it manipulate? (d) Name one important disturbance (it must change with respect to time).

Mathematical Statistics and Data Analysis 3
An urn contains three red balls, two green balls, and one white ball. Three balls are drawn without replacement from the urn, and the colors are noted in sequence. List the sample space. Define events A, B, and C as you wish and find their unions and intersections.

University Physics with Modern Physics (1) 14
A very small object with mass 8.20 * 10-9 kg and positive charge 6.50 * 10-9 C is projected directly toward a very large insulating sheet of positive charge that has uniform surface charge density 5.90 * 10-8 C>m2 . The object is initially 0.400 m from the sheet. What initial speed must the object ha

Fundamentals of Physics, Volume 2 (Chapters 21 - 44) 10
An elevator cab is pulled upward by a cable. The cab and its single occupant have a combined mass of 2000 kg.When that occupant drops a coin, its acceleration relative to the cab is 8.00 m/s2 downward.What is the tension in the cable?

Quantitative Chemical Analysis 8
In a coulometric Karl Fischer water analysis, 25.00 mL of pure dry methanol required 4.23 C to generate enough I2 to react with the residual H2O in the methanol. A suspension of 0.847 6 g of finely ground polymeric material in 25.00 mL of the same dry methanol required 63.16 C. Find the weight percen

Chemistry for today : general, organic, and biochemistry 9
Why is it necessary that protein molecules be enormous?