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calculate the wavelength of the radio wave
What is the wavelength of the 49,000-Hz radio wave used by "radio-controlled" clocks and wristwatches?
A 800- kg car collides with a 1500- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car
Determine the maximun wavelength of incident radiation that can be used to remove the remaining electron from a singly ionized helium atom He+ (z= 2)
A point charge q = 2.5 nC is initially at rest adjacent to the negative plate of a capacitor. The charge per unit area on the plates is 4.5 µC/m 2 and the space among the plates is 6.0 mm. What is the potential dissimilarity among the plates?
Water flows in a 120-cm-diameter sewer (finished concrete) with S ¼ 0.001 at a flow rate of 0.4 m3=s. What is the expected depth of flow?
77 N to push a box with an acceleration of 0.55 m/s2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.72 m/s2. What is the mass of the box
A standard nuclear power plant generates 2.4GW of thermal power from the fission of 235U. Experiments show that, on average, 0.19 u of mass is lost in each fission of a 235U nucleus. How many kilograms of 235U undergo fission each year in this powe..
A circular beaker is 40 cm tall and has a radius of 2 cm. Itinitially holds water at a depth of 25cm. What is the pressure at the bottom of the beaker
a particle of mass m5 kg is at rest at t0 seconds. a horizontal new force ft 6t2 - 4t 3 is acting on the particle
1 the speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the
What is the rms current in a series RC circuit if = 3.2 kOhm, C = 0.8 microfarads (uF) , and the rms applied voltage is 130V at 79Hz? What is the power dissipated by the circuit
A car travels a straight road at 120 km/h for 30 min. then at 90 km/h for 10 min. Find the average velocity and average speed for the entire trip
A bullet of mass mb = 16 g is fired with a speed of 260 m/s at a target that is a sheet of metal (mass mt = 410 g). what is the angular velocity of the target plus bullet just after the bullet hits
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