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1. An experiment is performed to obtain the value of a physical property. If the true (i.e., correct) value of the property is 50 and the measured (i.e., experimental) value is 30 , the percent error of the experimental result is:
2. A battery operating a large flashlight produces a current of 2 amperes in a lightbulb that has a resistance of 11.8 ohms. The voltage of the battery is:
3. In a pendulum experiment the pendulum moves from one side to the other side in 0.1 second. Calculate the period of the pendulum.
4. Calculate the period of a pendulum that has length = 0.3 m.
5. In an experiment to measure the angular resolution of the human eye, a test chart, can just be detected at a distance of 5.3 m. What is the approximate angular resolution of this eye in milliradians?
A sky diver of mass 60 kilogram can slow herself to a constant speed of 93 km/h by orienting her body horizontally, Determine the magnitude of drag force on the sky diver
catching a wave a 71 kg surfer starts with a speed of 1.3 ms drops through a height of 1.95 m and ends with a speed of
A circuit contains six 219 O lamps with 60-W bulbs and a 9.4 O heater connected in parallel. The voltage across the circuit is 126 v. What is the current in the circuit if six lamps and the heater are operating?
An object with total mass mtotal = 15.6 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.8 kg moves up, What is the mass of the third piece
Calculate your average velocity in the following two cases: (a) you walk 68.3 m at a speed of 1.74 m/s and then run 68.3 m at a speed of 3.43 m/s along a straight track. (b) You walk for 1.00 min at a speed of 1.74 m/s and then run for 1.57 min at 3...
A spaceship moving away from Earth at 0.67 c fires a particle beam toward Earth, with speed 0.74 c relative to the ship. find At what speed does Earth receive the particles
A bar of gold measures 0.16 m cross 0.056 m cross 0.049 m. How many gallons of water have the same mass as this bar
A block of mass m = 2.5 kg rests on a frictionless floor. It is attached to a spring with a relaxed length L = 6 m. By what amount is the spring extended
Rock 1 is thrown straight down from a tower. Rock 2 is thrown straight up from the same height at the same speed as rock 1. find which rock will have the greatest speed
What is the Compton effect, What is the shift in the wavelength of x-rays upon Compton scattering
In a series RLC AC circuit, the resistance is 26.8, the inductance is 22 mH, and the capacitance is 21.4 μF. The maximum potential is 197 Volt, and the angular frequency is 636.62 rad/s. Evaluate the maximum voltage across the inductor
a series RLC circuit contains a resistor of 20 ohms, a capacitor of 0.75 mF and an inductor of 120mH, what is the rms current operating at its resonance freq.
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