Reference no: EM13126884
1. A test vehicle on a track goes through photo gates spaced 25 m apart at the following times: 2.00 sec, 3.30 sec, 4.30 sec
a. Plot the position versus time of the vehicle.
b. Plot the average speed of the vehicle in the time intervals versus time.
2. A rally driver has to maintain a constant speed between checkpoints. She arrives at these points at the following times
26 mi at 31 min 12 sec
48 mi at 57 min 24 sec
87 mi at 1 hr 43 min 15 sec
105 mi at 2 hr 8 min and 49 sec
a) What is the most probable (i.e. average) speed that she is trying to maintain?
b) What is her largest deviation from this average speed?
3) What is the acceleration of a vehicle that charges its velocity from 100 km/h to a dead stop in 10 s?
4) You are driving north on a highway. Then, without changing speed, you round a curve and drive east.
a) Does your velocity change?
b) Do you accelerate? Explain
How many liters of h2 would be formed
: how many liters of H2 would be formed at 530 mm Hg and 15 degrees celcius if 20.5g of zinc was allowed to react?
|
Determining velocity of objects
: If an object is given an initial velocity straight upward of v0 feet per second from a height of s0 feet , then its altitude's after 1 second is given by the formula
|
What was the initial concentration
: A zero-order reaction has a constant rate of 2.40×10-4 M/rm s. If after 80.0 seconds the concentration has dropped to 7.00×10-2 M,
|
Cash dividends on preferred stock
: The income statement for Roland Inc. shows income before income taxes $700,000, income tax expenses $210,000, and net income $490,000. If Roland declared $150,000 of cash dividends on preferred stock and has 100,000 shares of common stock outstand..
|
Displacement-velocity and acceleration
: A test vehicle on a track goes through photo gates spaced 25 m apart at the following times: 2.00 sec, 3.30 sec, 4.30 sec. Plot the position versus time of the vehicle. Plot the average speed of the vehicle in the time intervals versus time.
|
How many moles of co(nh2)2 are present
: How many moles of CO(NH2)2 are present in 150 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
|
Explain stated life of the battery was significant
: The test question was if this difference between the test statistics and the stated life of the battery was significant? The .05 significant level was selected for the test. Which is the correct statement?
|
Earnings available for dividends
: Cash of $2,000 had been set aside for the plant expansion. How much of retained earnings is available for dividends?
|
What is the concentration of cacl2 in mass percent
: an aqueous CaCl2 solution has a vapor pressure of 81.1 mmHg at 50 C. The vapor pressure of pure water at this temperature is 92.6 mmHg.
|