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Suppose you want to detemine the electrical field in a certain region of space. You have a small object of known charge and an instrument that is measures the magnitude and direction of the force ex
In what ways do photons resemble other particles such as electrons? In what ways do they differ? Do photons have mass? Do they have electric charge? Can they be accelerated? What mechanical properti
The rocket eventually stops rising and then falls back to the ground. You want to get a sample of air that is 17 km above the ground.a) What is the highest point your rocket reaches?
The masses of the earth and moon are 5.98 * 10^24 and 7.35 * 10^22 kg, respectively. Identical amounts of charge are placed o each body, such that the net force (gravitational plus electrical) on ea
How many electrons did it take to produce the charge on one of the objects?
Electrons move through a certain electric circuit at an average speed of 1.1 x 10-2 m/s. How long (in minutes) does it take an electron to traverse 3.36 m of wire in the filament of a light bulb?
How much charge ends up on sphere C? What is the total charge on the three spheres?
When points charges q1 = +8.4μC and q2 = +5.6μC are brought near each other, each experience a repulsive force of magnitude 0.66 N. Determine the distance between the charges.
The second friend looks at her meter and realizes she is three times as far away. What field strength does the second friend's meter read?
Two forces, 473 N at 11 degrees and 423 N at 28 degrees are applied to a car in an effort to accelerate it. a) What is the magnitude of the resultant of these two forces?
How does the position vs time graph differ from a position vs time graph for constant velocity motion? How does it show that the velocity is changing?
A small block of mass (M) is given an initial speed Vo up a ramp inclined at angle (theta) to the horizontal. It travels a distance (d) up the ramp and comes to rest. Determine a formula for the coe
(a) What minimum constant acceleration does the aircraft require if the aircraft is to be airborne after a takeoff run of 290 m?
Two tanks are engaged in a training exercise on level ground. The first tank fires a paint-filled training round with a muzzle speed of 241m/s at an angle 12.4 degrees above the horizontal while adv
A cyclotron is sometimes used for carbon dating. Carbon -14 and carbon -12 ions are obtained from a sample of the material to be dated and are accelerated in the cyclotron. If the cyclotron has a ma
Two long parallel wires separated by a distance d each carry a constant electric current I. Find an expression for the magnitude of the force per unit length of wire (F/L) on each wire from the magn
Three long parallel wires each carry a 2 A current with two of the currents up and one down. The wires pass through the corners of an equilateral triangle with .2 m sides. Find the magnetic field (m
Two long vertical wires are separated by 2m. The one on the left carries a current of 8 A upward and the other carries a current of 5 A downward. a) Find the magnetic field at the midway point betwe
A projectile is launched at speed vo from the foot of an incline that makes angle θ=22.0 degrees relative to the ground. The projectile is launched at an angle φ relative to the incline.
What is the magnetic potential energy of a 2 cm diameter circular loop carrying a 1A current when placed in a 2 T uniform magnetic field after reaching its stable equilibrium position?
A mass spectrometer can detect the different isotopes of an ionized element. If Zn 2+ ions are accelerated through a 10 kV potential and enter a 10 T magnetic field region, calculate the different ra
calculate the crystal formation rate in crystals/s corresponding to a crystal diameter of 0.050inch.
Two resistors (connected in series with each other) and a 17 V battery are connected in a loop. The voltage drop across the first resistor is 6 V. What is the voltage drop across the second resistor
The coefficient of kinetic friction is 0.15 at the start of the section and 0.25 at the finish, varying linearly with distance in between. a. Draw a complete free-body diagram of the crate.
A car of mass m accelerates from rest along a level straight track, not at constant acceleration but with constant engine power, P. Assume that air resistance is negligible. (a) Find the car's veloc