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An electron moves with a velocity of 5 x 10^5m/s at an angle of 60 degrees with an eastward B field. The electron experiences a force of 3.2 x 10^-18N directed into the paper. What are the magnitude of B and direction of the velocity?
A 3.4-cm-diameter parallel-plate capacitor has a 1.8mm spacing. The electric field strength inside the capacitor is 1.3×105V/m, What is the potential difference across the capacitor
A radioactive isotope has an activity of 8.39 mCi. After 3.30 hours the activity is 6.71 mCi. What is the half-life of the isotope
A 40-g object connected to a spring with a force constant of 30 N/m oscillates with an amplitude of 8 cm on a frictionless, horizontal surface. Find the total energy of the system
What is the speed of light in a diamond that has an index of refraction of 2.4168? Calculate your answer to 3 significant figures
A tennis ball gun launches tennis balls at 17.6 m/s . It's pointed straight up and launches one ball; 2.0 s later, it launches a second ball. I already found - At what time (after the first launch) are the two balls at the same height? = 2.8s What..
What is the separation distance between speaker and listener
The isotope ^(99)Tc* is commonly used in several different types of medical imaging procedures. find the change in the nuclear mass after emission of the gamma ray
A rocket moves upward, starting from rest with an acceleration of 33.4 m/s2 for 3.47 s. It runs out of fuel at the end of the 3.47 s but does not stop. How high does it rise above the ground.
A spring with spring constant 36N/m is attached to the ceiling, and a 5.1-cm-diameter, 1.3kg metal cylinder is attached to its lower end. what length of the cylinder is submerged
What is the velocity of the rocket when it runs out of fuel.
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
A stone thrown upward from the top of a 100ft cliff at 150ft/s eventually falls to the beach below. (For this problem take the acceleration because of gravity to be -32 ft/s^2; take upwards to be a positive direction.) How long does it take the st..
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