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George is swinging on a playground swing. The length of the swing is l, and George's weight is W. At the bottom of the swing, George's speed is v=n1 meters/sec. The value of l times g is equal to l
Why does your arm feel cold when you reach inside the refrigerator?
A 220 g block on a 60cm -long string swings in a circle on a horizontal, frictionless table at 55 rpm. What is the speed of the block?
A five-slit system with 9.0 slit spacing is illuminated with 615 light. Find the angular positions of the first two maxima.Find the angular positions of the third and sixth minima.
show link between structure and function of respiratory,circulatory and digestive system, and how does diffusion takes place in this?
A body of weight 150N is supported bya thin cord attached to a point in the ceiling. Another cord is attached to the weight and pulled horizontally until the supporting cord makes an angle of 30 de
Estimate the radius of curvature for a curve marked 35km/h . The coefficient of static friction of rubber on wet concrete is 0.7, the coefficient of kinetic friction of rubber on wet concrete is 0.
A helium-neon laser emits light of wavelength 633 nanometers (nm). Light from an argon laser has a wavelength of 515 nm. Which laser emits the higher-frequency light?
A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.00 rev/s in 3.00 s. What is the radial and tangential components of the acceleration of a point on the outer rim o
Two bicycle tires are set rolling with the same initial speed of 3.70 along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflate
A rock is tossed straight up with a velocity of 38.0 m/s. When it returns, it falls into a hole 18.5 m deep. What is the rock's velocity as it hits the bottom of the hole?
Next, specify which muscles are pulling on which bones and what types of joints are involved to reach up above your head to the shelf.
A 8.70 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.440. Determine the kinetic frictional force that acts on t
Feeding behavior that has a high intake-to-expenditure ratio is called
When angle=20.0 degrees, the speed of the object is 8.00 m/s. At this instant . find (a) the tension in the string. (b) the tangential and radial components of acceleration.
The machinery within a cardiac muscle fiber uses? as building blocks
What is the energy of the electrons when they hit the screen? The elemental charge is 1.6 × 10 19 C and the mass of an electron is 9.11 × 10-31 kg.
The loaded cab of an elevator has a mass of 3.0 * 103 kg and moves 155 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?
Write an essay that discusses what biodiversity means and how it has been affected by natural and man-made pathways
Discuss any internet article on plate tectonics, continental drift and its effects, or seismology. Or discuss any of Earth's many cycles and evidence of their effects.
Rod A, which is 30 cm long, expands by 0.045 cm when heated from 0°C to 100°C. Rod B, also 30 cm long expands by 0.075 cm for the same change in temperature. A third Rod C, also 30 cm long
The screen is 1.70cm wide-that is, the two first-order diffraction minima are separated by 1.70cm. What is the distance between the two second-order minima?
A 400g lemming waddles horizontally off a small 4.9m high cliff with a horizontal velocity of 0.5m/s. a. How far from the base of the cliff will the lemming land?
A 25- sample of an ideal gas with is at 250 and 50 . The gas is compressed isothermally to one-third of its original volume, then heated at constant volume until its state lies on the adiabatic cur
A single electron experiences a force of 2.2 × 10-15 newtons while in the field. What is the strength of the magnetic field? The value of q = -1.6 × 10-19 coulombs.