An 8.0-kg object rests on the floor of an elevator which is accelerating downward at a rate of 1.3 m/s2. What is the magnitude of the force the object exerts on the floor of the elevator?
A. 59 N
B. 10 N
C. 89 N
D. 68 N
E. 78 N
Answer: D
You might also like to view...
A proton (mass = 1.67 × 10?27 kg, charge = 1.60 × 10?19 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 50 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB?VA.
A. +20 V B. ?20 V C. ?27 V D. +27 V E. ?40 V
The simplest reflector telescope design is the prime focus reflector
Indicate whether the statement is true or false
Which of the following could be the monomer of an addition polymer?
a. CCl4 b. Cl2C=CH2 c. CHCl3 d. Cl3C=CCl3
Waves on a String: A 90-gram wire that is 1.0 m long is under tension. When a transverse wave of frequency 890 Hz travels down the wire, its wavelength is 0.10 m and its amplitude is 6.5 mm. What is the tension in the wire?
A. 710 N B. 820 N C. 930 N D. 1000 N E. 1100 N