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Two +1 microCoulomb point charges are located on the x-axis, at x =2m and at x = -2m. Find the magnitude of the electric field at the origin.
Some good estimates about the human body can be made if it isassumed that we are made mostly of water. The mass of a water molecule is 2.99*10-26 kg. If the mass of a personis 51 kg, estimate the number of water molecules in that person.
A 3kg particle has position as a function of time given by (-3,+1 m/s*t)x +(4m+ m/s t)y -(3 m/s* t)z What is the particle's angular momentum about the origin at t=5s
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 2.4 x 106. One pulse is delivered every time the fully charged capacitor loses 63.3% of its ..
The block on the left hass a mass of 0.40 kg and is initially moving to the right at 2.4 m/s toward a second block of mass 0.50 kg that is initially at rest. What is the velocity of the first block after the collision
The traces of the rain on the side windows of the car make an angle of 60.0 with the vertical. Find out the velocity of the rain with respect to the following reference frames.
A transformer has 900 turns on its secondary and 100 turns on its primary. The primary is connected to a 11-V source. What is the voltage output of the secondary
Two planets are on a collision course, heading directly toward each other at 0.250c. A spaceship sent from one planet approaches the second at 0.750c as seen by the second planet. find the velocity of the ship relative to the first planet
a block of a certain material begins to slide on an inclined plane when the plane is inclined to an angle of 18.26deg.
A block is sliding to the right up a inclined plane (10 degrees) at an initial speed of 0.5 m/s. The coeffecient of friction is 0.3. how large must the minimum coefficient of static friction be
A cart of mass m1=0.5 kg moves with a velocity of 0.9 m/s to the right on a frictionless track. What is the velocity of each cart after the collision
What is the direction of an electric field that will balance the weight of a 3.7g plastic sphere that has been charged to -3.1nC ? Upward or Downward
A gasoline engine absorbs 2,600 J of heat and performs 1,000 J of mechanical work in each cycle. Find the total of heat expelled in each cycle.
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