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Red light of wavelength λ = 632.8 nm is incident on apair of slits whose separation is 0.70 mm. What is the separation of neighboring interference maxima on a screen 170 cm from theslits?( mm)
A 0.2 kg steel ball is dropped straight down onto a hard, horizontal floor and bounces straight up. FIND the magnitude of the impulse delivered to the floor by the steel ball
High-speed photos of a 200%u03BCg flea jumping vertically show that the jump lasts 1.5ms, What average force does the ground exert on the flea during its jump
A 1,720 Hz pure tone is played on a stereo in an open field. A person stands at a point that is 4 m from one of the speakers, Does the person hear the tone
I just got this wrong for the third time. A u-tube manometer is used to measure the pressure of a vessel under vacuum. Assume the manometer is open to atmospheric pressure.
long thin uniform rod lies motionless in fric free horizontalplane along y-axis. It's pinned to the ground with a friction freepivot. A force F is applied at 90deg. to the bar and at its veryend. IF the mass is 1kg and force is 2N:
a point dipole P is imbedded at the center of asphere of linear dielectric material (with radius R and dielectricer ). find the electric potential inside and outside the sphere
What is mechanical energy dissipated by resistive forces
A 0.075 kg arrow is fired horizontally. The bowstring exerts an average force of 65 N on the arrow over a distance of 0.9 m. With what speed does the arrow leave the bow
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, find the horizontal and vertical components of the launch velocity
An elementary particle called a pi meson (or pion for short) has an average lifetime of 2.6×10?8s when at rest. Find the average distance traveled by the pion as measured by the same observer
A 1.00 kg block of copper at 20.0°C is lowered into a large insulated container of liquid ammonia at its boiling point (-33.3°C). determine the mass of liquid ammonia that boils away before thermal equilibrium
An isolated parallel plate capacitor contains charge Q = +10uC on its plates, correponding to a potential difference of 10V. What is the voltage between the two plates after the separation becomes 2d
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