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The kinetic energy of the lead car
  Q1. A crate of fragile dishes is in the back of a pickup truck. The truck accelerates north from a stop sign, and the crate moves without slipping. Does the friction force on the crate point …
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Determine how far from the base of the hill does he end up
  Josh starts his sled at the top of a 3.0 m high hill that has a constant slope of 25°. After reaching the bottom, he slides across a horizontal patch of snow. The hill is frictionless, b …
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Find the magnitude of the total force on the achilles tendon
  1. Two muscles in the back of the leg pull upward on the Achilles tendon, as shown in Figure. These muscles are called the medial and lateral heads of the gastrocnemius muscle. Find the magn …
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What is the purpose of this wire
  At some automobile toll-collecting stations, a thin metal wire sticks up from the road and makes contact with cars before they reach the toll collector. What is the purpose of this wire? 1. …
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What resistive force does the wood exert on the bullet
  A rifle with a barrel length of 59 cm fires a 8 g bullet with a horizontal speed of 350 m/s. The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assu …
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Determine the number of pounds of helium within it
  The helium-filled blimp shown in Fig. P1.52 is used at various athletic events. Determine the number of pounds of helium within it if its volume is 68,000 ft3 and the temperature and pressur …
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What is the speed of the large cart after the collision
  Q. At each of the designated points, rotate the given vector to indicate the direction of the force exerted by the water on either the inside of fishbowl (for points A and B) or the outside …
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Two spherical shells have a common center
  Two spherical shells have a common center. A -2.8 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +5.5 10-6 C charge is spread uniformly over the out …
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The final speed of the two bumper cars after collision
  Q. A bumper car with mass m1 = 115kg is moving to the right with a velocity of v1 = 4 m/s. A second bumper car with mass m2 = 95 kg is moving to the left with a velocity of v2 = -3.7 m/s. Th …
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How long does it take ilya to cover the distance
  Solve the all parts of given question: Question: Ilya and Anya each can run at a speed of 7.10mph and walk at a speed of 3.00mph. They set off together on a route of length 5.00miles. Any …
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What is total magnetic flux through plastic of soda bottle
An open plastic soda bottle with an opening diameter of 3.0 cm is placed on a table. A uniform 1.95-T magnetic field directed upward and oriented 29º from vertical encompasses the bottle. What is …
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The putty-block system compress the spring
A 0.430 kg block is attached to a horizontal spring that is at its equilibrium lenght, and whose force constant is 20.0 N/m. The block rest on a frictionless surface. A 0.0500 kg wad of putty is throw …
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Determine the tension force in the rope
Christian is making a Tyrolean traverse as shown in the figure. That is, he traverses a chasm by stringing a rope between a tree on one side of the chasm and a tree on the opposite side, 23m away. The …
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Find an expression for the work the elevator cable does
  Question: An elevator of mass m rises a vertical distance h with upward acceleration equal to one-tenth g. Find an expression for the work the elevator cable does on the elevator. The respon …
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What traction force does this system produce along the leg
  Solve the given problem: Problem: In order to prevent muscle contraction from misaligning bones during healing (which can cause a permanent limp), injured or broken legs must be supported …
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What is the ratio of electric force on bee to bees weigh
  A 0.15g honeybee acquires a charge of 22pCwhile flying. The electric field near the surface of the earth is typically 100N/C , directed downward. What is the ratio of the electric force on t …
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Estimate the magnitude of the force per unit area on sheet
  Solve the all parts of following problem given bellow: Problem: Three large but thin charged sheets are parallel to each other. Sheet I has a total surface charge density of 7.6nC/m2, she …
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What rotation period will provide normal gravity
  Despite what you see in science fiction movies, we don't know how to make artificial gravity. However, we can make something that seems like gravity if we work in a rotating reference fr …
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Calculate how long is the bar
  A uniform steel bar swings from a pivot at one end with a period of 1.1s How long is the bar?   …
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Evaluate what is the gazelle top speed
  Compute all parts of given problem: Problem: A Thomson's gazelle can run at very high speeds, but its acceleration is relatively modest. A reasonable model for the sprint of a gazelle …
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