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In the Arctic, polar bears must be able to walk on thin ice to travel and hunt for food. An average male polar bear has a mass of around 400 kg, which must be distributed in a way that prevents them from breaking through the ice. To solve this problem, the paws of a polar bear are quite large compared to their body size, and this creates a force that is more spread out over the area of the ice.
If a typical male polar bear's paw measures approximately 0.3 m in diameter (assuming it is a circle), what is the stress that a single paw exerts on the ice? (Assume that paws are circular and the bear's weight is distributed evenly.)
Two beads slide along a straight, frictionless wire. The first has a mass of 0.5 Kg and a velocity of 5m/s moving to the left. They collide and stick together, moving as one object. A)Find the magnitude and direction of the velocity of the beads a..
The truck slows down uniformly with an acceleration of 5.60 m/s2 for 4.20 s, making skid marks 62.40 m long that end at the tree. With what speed does truck then strike the tree.
A plank 2.00 cm thick and 12.4 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m, find the shear modulus of the wood
A 118 g cube of ice at 0°C isdropped into 1.0 kg of water that was originally at 84°C. What is the final temperature of the water after the ice has melted
When there is an input connected across a 12V DC source what is the voltage of the output voltage after the power is connected for a while
Identify the magnitude and direction of the electric field at a point midway between a -8.0 uC and a +5.8 uC charge 8.0 cm away. Assume no other charges are nearby.
q1. blood is capable of carry excess energy from the interior to the surface of the body where the energy is dispersed
An oil layer floats on 85 cm of water in a tank. The absolute pressure at the bottom of the tank is 112.0 kPa. How thick is the oil
An engine does 17200 J of work and rejects 6470 J of heat into a cold reservoir whose temperature is 272 K
After a completely inelastic collision, two objects of the same mass, Find the angle between the initial velocities of the objects
A particle moves horizontally in uniform circular motion, over ahorizontal xy plane. What are thecoordinates of the center of the circular path
the potential energy of a +5x10-6C charge decrease from 0.17J when it is moved from point A to point B. What is the change in the electric potential between these two points
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