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A hunter standing between two hills fires a shot and hears echoes at a gap of 1s. What is the distance between the two hills?(the hunter is not standing at the centre of the two hills).
An unstable high-energy particle is created during a collision in the Large Hadron Collider (LHC). Its speed relative to the stationary collider is measured to be 0.995c, and the particle leaves a track 12.05 mm long before it decays.
You're driving along a rural highway in a light rain at 62 mph (28 m/s). Just after rounding a bend, you see a 30-mph (13 m/s) speed zone ahead, with a police car parked just beyond the sign.
A water heater consisting of a metal coil that is connected across the terminals of a 12-V power supply is able to heat 220 mL of water from room temperature (20°C) to boiling point in 50 s. What is the resistance of the coil? (When entering units, u..
The spectra you observe through the diffractiohn grating for these atomic vapor lamps are discrete lines of color. Recall what you observed for the spectral pattern for "white light" from a light bulb. Explain what is happening. ie. the difference..
The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. how high is the hotel room from the ground
At a recent rock concert, a dB meter registered 130 dB when placed 1.50 m in front of a loudspeaker on the stage. What was the power output of the speaker
A particle of charge q = e moves in a circle of radius = 0.42 m with speed v = 2.150×107 m/s. find the maximum torque exerted on the loop by a uniform magnetic field of magnitude B = 0.60 T
a winch at point b is used to slide a box up a chute cd in a warehouse.the box wieghs 530lb and fits loosely against
question1a dock worker loading crates on a ship finds that a 22 kg crate at first at rest on a horizontal surface
A ball with a diameter of 10 cm is submerged in water. The buoyant force of the water on the ball is
A distant galaxy emits light that has a wavelength of 499.8 nm. On earth, the wavelength of this light is measured to be 503.8 nm. Find the speed of the galaxy relative to the earth
Changes in wind and tide made average speed on return trip 3 mph slower than the speed on the way out. If the total time of the trip took 9 hours find speed of both the going and the return trip.
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