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Three blocks are in contact and sitting on frictionless table. The first blog has a mass m1=1.2 KG, the second block has mass m2= 2.5 KG, and the third luck has mass m3 = 3.1 KG. An external force is applied causing three blocks to move together with the constant uniform acceleration od 1.9 m/s^2. What is the magnitude of the force exerted by the third block on the second block?
The loaded cab of an elevator has a mass of 2.8 x 10^3 kg and moves 214 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab.
A car dealer claims that his product will accelerate at a constant rate from rest to a speed of 200 km/hr in 8s. What estimated distance will the car travel.
A person with a digital camera uses a lens of focal length 15.0mm to take a photograph of the image of a 1.40cm -tall seedling located 9.80cm behind a double-convex lens of 17.0cm focal length
Two charges, q1 = -80 nC and q2 = +50 nC are placed 3 m apart as shown. The (x,y) coordinates of the charges and two other points in meters are indicated. Find out the electric potential at points A and B
A hoop of mass 1.9 kg and radius 55 cm has a string wrapped around its circumference and lies flat on a horizontal frictionless table. What is the angular velocity of the hoop about its center of mass after 2 s
An ideal transformer has 400 turns on its primary and 18 turns on its secondary. what is the power output
An estimated 3kg-Gromit was tied to a bungee cord to clean the windows of Wendolene Ramsbottom's wool shop. If gromit stops before he reaches the ground, what is the height h of his waist above the ground at his lowest point
A geothermal power plant uses geothermal water extracted at 160oC at a rate of 440 kg/s as the heat source and produces 22 MW of net power.
You see lightning strike a mountaintop, and 2.98 s later you hear the accompanying thunder. How far away is the mountaintop
Use approximate calculations assuming constant current during the output pulse. Calculate the ampere-hour rating of the battery so it lasts for five years.
Ice of mass 11.0 kg at 0.00° C is placed in an ice chest. The ice chest has 3.10 cm thick walls of thermal conductivity 1.00 x 10^-5 kcal/s · m · C°, How much heat must be absorbed by the ice before it melts
An iron casting containing a number of cavities weighs 16967.7 N in air and 13515.2 N in water. What is the total volume of all the cavities in the casting
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