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An object is moving with velocity 18.8 m/s along a line [making an angle of] 218° measured counterclockwise from the x axis. What are the x and y components of its velocity vector?
what is the equilibrium temperature of a collector plate directly facing the sun? Note that while a plate has two sides, only the side facing the sun will radiate because the opposite side will be w
The stone is released when the raft has 9.23 m more to travel before passing under the bridge. The stone hits the water 4.36 m in front of the raft. Find the speed of the raft.
A pellet gun is fired straight downward from the edge of a cliff that is 12.2 m above the ground. The pellet strikes the ground with a speed of 38.5 m/s. How far above the cliff edge would the pell
A dynamite blast at a quarry launches a rock straight upward, and 2.3 s later it is rising at a rate of 14 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch
A large parallel plate capacitor has plate separation of 0.92 cm and plate area of 266 cm2. The capacitor is connected across a voltage of 17.7 V and has air between the plates. How much work is do
A silver wire of diameter 2.0 mm carries a current of 159 mA. The density of conduction electrons in silver is 5.8 1028 m3. How long (on average) does it take for a conduction electron to move 1.0 cm
Part A: What is the magnitude of the acceleration of a Proton that is 3.0cm from the center of the bead?
How long does it take the Sun to melt a block of ice at 0 with a flat horizontal area 1.0 and thickness 2.0 ? Assume that the Sun's rays make an angle of 38 with the vertical and that the emissivity
A point charge, q1, of 2.00x10^-6C is placed on the x-axis at (-4.0 cm, 0 cm). An identical charge, q2, is placed at (4.o cm, 0 cm). Find the total electric potential due to these charges at the fol
Green laser light shines on a double slit, creating a pattern of bright and dark spots on a screen some distance away. Which of the following changes, carried out separately, would increase the dist
A double-slit experiment is performed with light of wavelength 600 nm. The bright interference fringes are spaced 1.54 mm apart on the viewing screen. What will the fringe spacing be if the light is
Two narrow slits 58 µm apart are illuminated with light of wavelength 540 nm. What is the angle of the m = 2 bright fringe in radians? What is the angle in degrees?
The manufacturer promises only 25.0% efficiency in converting the potential energy of the water-Earth system into electric energy. Find the power she can generate. (Large-scale hydroelectric plants,
(a) With what speed does the projectile leave the barrel of the cannon? Make certain you have correctly converted all of the centimeter and gram quantities to MKS units. (b) At what point does the b
At a state fair a strongman claims to be able to throw a m=100 g baseball straight up in the air (ignore air resistance) with an initial speed of 40 m/s. You decide to test his claim by computing a
A metal sphere of radius 5.00 cm is initially uncharged. How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.51 105 N/C at a point 7.78 cm from the
A proton is released from rest in a uniform electric field of magnitude 412 N/C. (a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude
A charge of 100 µC is at the center of a cube of edge 40.0 cm. No other charges are nearby. (a) Find the flux through the whole surface of the cube.
The eye of a hurricane passes over Grand Bahama Island in a direction 60.0° north of west with a speed of 38.0 km/h. Three hours later, the course of the hurricane suddenly shifts due north, and
What is the deBroglie wavelength of a neutron whose kinetic energy is 0.04 eV? Help: We give masses in terms of their mc2 energy equivalent, because that simplifies the numerical calculation when ener
The charged capacitors are disconnected from the line and from each other and then reconnected to each other, with terminals of like sign together. Find the final charge on 3*10^6F- capacitor. Find
Using Gauss's law and assuming the pipe is sufficiently long to consider it infinitely long calculate the electric field r=7.14cm from the centreline of the pipe. Could someone please help me and al
A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 416 nm. (a) What is the speed of light in this solid? m/s (b) What is the light's frequency in the solid?