Constant Acceleration Kinematics: An auto accelerates forward from 7.0 m/s at a uniform 0.71 m/s2. It travels a distance of 1.033 km while accelerating.(a) How fast is the auto moving just as it is traveled the 1.033 km?(b) How many seconds did it take to travel the 1.033 km?
Fill in the blank(s) with the appropriate word(s).
(a) 39 m/s (b) 45 s
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At room temperature, a typical person loses energy to the surroundings at the rate of 62.0 W
If this energy loss has to be made up by an equivalent food intake, how many Calories does this person need to consume every day just to make up this heat loss? A) 1040 Calories B) 1160 Calories C) 1280 Calories D) 1340 Calories E) 1400 Calories
A disk has a moment of inertia of 3.0 × 10^?4 kg·m2 and rotates with an angular speed of 3.6 rad/s. What net torque must be applied to bring it to rest within 3.6 s?
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In a loop in a closed circuit, the sum of the currents entering a junction equals the sum of the currents leaving a junction because
a. the potential of the nearest battery is the potential at the junction. b. there are no transformations of energy from one type to another in a circuit loop. c. capacitors tend to maintain current through them at a constant value. d. current is used up after it leaves a junction. e. charge is neither created nor destroyed at a junction.
A bridge piling has a cross-sectional area of 1.250 m2 and supports a load of 1875 N. What is the stress on the column?
A) 1875 N B) 1875 N/m2 C) 1500 N/m2 D) 2344 N/m2