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The magnetic field of the earth at a certain location is directedvertically downward and has a magnitude of 50.0 µT. A protonis moving horizontally toward the west in this field with a speedof 6.50*106 m/s. What are the direction and magnitude of the magnetic force the field exerts on the proton?
An ac series circuit has an impedance of 196 ? , and the phase angle between the current and the voltage of the generator is ? = -72°. The circuit contains a resistor and either a capacitor or an inductor
A 4.40 kg ball is dropped from a height of 14.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after collision
What is the required average power.
When a 9.0 V battery is connected to a capacitor, it puts 8.40e-4 C of charge on the capacitor. What is the unknown battery's voltage
An electron in a cathode-ray tube is emitted from a hot filament at a negligible speed. , whereupon it accelerates across a potential difference of 1.00 x 106 V. Determine its final speed compared to the classical result.
A plane weighing 245 kN (27.5 tons) lands on an aircraft carrier. The plane is moving horizontally at 60.7 m/s (136 mi/h) when its tailhook grabs hold of the arresting cables. What is the force (assumed constant) exerted on the plane by the cables
Two express trains started 5 minutes apart. Starting from rest, each is capable of a maximum speed of 160km/h after uniformly accelerating over a distance of 2.0 km. How far ahead is the first train when the second one starts
Automobile engine slows down from 4500 rpm to 1200 rpm in 2.5 s. compute (a) its angular acceleration, assumed constant and (b) total number of revolutions the engine makes in this time.
How many time constants (a decimal number) must elapse before a capacitor in a series RC circuit is charged to 75.0% of its equilibrium charge
Show that the sun is not at rest in the center of the solar system by calculating the distance from the Sun's center to the center of mass of the Sun-Jupiter system
A Nichrome wire is used as a heating element in a toaster. From the moment the toaster is first turned on to the moment the wire reaches it maximum temperature, What is the temperature change in the wire
Light from a laser (? = 640 nm) passes through a diffraction grating and spreads out into three beams as shown in the figure. Determine the spacing between the slits of the grating
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