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Question: A student in a geology lab lifts a rock, whose mass m is 12 kg, from the floor and, raising it (with negligible acceleration) to a height d of 1.8m, put it on a shelf. We wish to identify the forces that act on the rock and to calculate the work that they do. Identify these forces and calculate their magnitudes.
Starting from rest at the top of a tall, steep ramp, a sphere rolls without slipping to the ground 6.9 m below. At the bottom, its speed is 9.0 m/s. Question The sphere is either solid or hollow: which is it?
In a Carnot cycle the area for each transformation corresponds to the following work: (a) isothermal expansion: 31,165 J, (b) adiabatic expansion: 21,517 J, (c) isothermal compression: 24,282 J, (d) adiabatic compression: 21,517 J. Calculate (1) the ..
A certain part of an aircraft engine has a volume of 2.6 ft3. Determine how much weight is saved by using aluminum instead of nickel
a family wishes to purchase a heat pump for their home. The get-it-cheap co. sells a heat pump that has an operating performance 38% of the coefficient of performance of an ideal Carnot heat pump. Compute the overall coefficient of performance for ..
An aircraft with a mass of 956 kg accelerates from 0 to 92 m/s in 6.7 seconds, What is the kinetic energy of the aircraft when the aircraft launches
A transformer has 100 loops in its secondary winding and is designed to accept an input AC potential difference of 830 V and produce an output of 470 V. How many loops does the transformer's primary winding contain?
A car is driven east for a distance of 51 km, then north for 30 km, and then in a direction 31° east of northfor 29 km. Draw the vectordiagram and determine the total displacement of the car from its starting point.
a charge q1 3.1 times 10-6 c is placed at the origin. charge q2 -6.8 times 10-6 c is placed on the x-axis at x -0.20
Suppose you have a 9.00 V battery, a 2.2uF capacitor, and a 9.05uF capacitor. Find the total charge stored in the system if the capacitors are connected to the battery in series in C
If the 140 g ball is moving horizontally at 23 m/s, and the catch is made when the ballplayer is at the highest point of his leap, what is his speed
A bottle has a mass of 35.00 g whenempty and 98.40 g when filled with water. What is the specific gravity of this other fluid
The rectangular gate CD shown in the figure is 1.8 m wide and 2 long. Assuming the material of the gate to be homogeneous and neglecting friction at the hinge C, determine weight of the gate necessary to keep it shut until the water level rises to..
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