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A horizontal board weighing 232.0 Nis supported at points A and B in the figure below. The plankserves as a platform for a painter, who weighs 571.0 N. Find the maximum distance D, such that the plank will not tip, no matter where the painter stands.(Let L = 4.10 m.)
The intensity of the sound wave from a jet airplane as it is taking off is 114 W/m2 at a distance of 4.3 m. What is the intensity of the sound wave
Two identical 1.70kg masses are pressed against opposite ends of a spring of force constant 1.70N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth
You want a screen to be illuminated with an intensity of 440 mW/m2. The screen is 12.97 m away from the light source, What is the rms value of the electric field at the screen
The path of an electron, travelling at 3.7 × 104 meters/second, is making the right angle to a magnetic field. A single electron experiences a force of 2.2 × 10-15 Newton's while in the field. What is strength of the magnetic field .
A potential difference is applied between the electrodes in a gas discharge tube. What is the current in the tube
Consider a car which weighs about 2000 kg and is parked at an elevation of 30 m above the bottom of a hill with a constant slope equal to -.5. what is a horizontal component of the force on the car
Heart Pump Rate When at rest, your heart pumps blood at the rate of 5.00 liters per minute (L/min). find the volume of blood pumped by your heart in one day
A 100 W point source radiates yellowish-green light of wavelength 555 nm uniformly in all directions. how far from the source could the light be detected
Assume someone drops an apple from a vertical distance of 6.0 meters, directly above the point where the arrow hits the tree.
Charge q is moving at constant speed v along the positive x-axis, Find the Cartesian components of the magnetic field at a point (x,y,z) for t > 0
Calculate the value of (x2) for the first excited state of a harmonic oscillator and find the eigenvalue of the operators
For a record playing at 78 rpm, find the frequency and the angular velocity. Find the Frequency and angular velocity
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