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Answer true or false.The electric field and equipotential surfaces are perpendicular.The force acting on a positive charge in an external electric field is in the opposite direction as the electric fi
Consider a black box which is approximately a 10-cm cube with two binding posts. Each of these terminals is connected by a wire to some external circuits. Otherwise, the box is well insulated from eve
A tube that is open at both ends is filled with an unknown gas. The tube is 190 cm long and 3 cm in diameter. Can you determine the amplitude of the wave? If so, what is it? If not, why not?
The mass attenuation coefficient for concrete (density r= 2.35 g/cm3) for 600 keV photons is 0.08 cm2/g.What is the probability that a 600 keV photon, normally incident on a thick, flat concrete shiel
A block hangs from a string from the outside rood of a van. When the van rounds a corner of radius equal to 150cm at a speed of 28m/s,the block swings to the outside and makes and angle theta with
Calculate the pressure of 5.00 mol of an ideal gas which is contained in a rigid container if at the same temperature 2.00 mol of gas would generate 5.0 atm of pressure in this same container.
How much power must the runner produce during the acceleration phase? How much power must the runner produce during the constant phase?
Question: Forces with magnitude of 125 newtons and 300 newtons act on a hook. the angle between the two forces is 45 degrees. find the direction and magnitude of the resultant of these forces.
Determine X. Determine the maximum speed of the mass
Consider an RC series circuit. You measure R to be 887 ? and C to be 831 nF. You set the signal generator output to produce a sinusouidal output with an amplitude of 2.05 V.At what
A 60kg diver jumps off a platform that is 10m above the surface of the water with an initial upward velocity of 3m/s. The diver comes to rest 3.5m below the surface of the water. Determine the aver
Refrigerant 134a enters a compressor operating at steady state as saturated vapor at 0.12 MPa and exits at 1.2 MPa and 70oC at a mass flow rate of 0.108 kg/s. As the refrigerant passes through the com
What is the weight of the jumper? What is the force of the trampoline on her feet while it is pushing her upward? (700N)
An automobile with a mass of 1000kg, including passengers, settles 1.0cm closer to the ground for every 100kg of additional passengers.It is driven at a constant horizontal speed of 20km/hr over
A mirror has a radius of curvature of 24 cm. mirror is convex. You look at the reflection of your eye, while holding the mirror 100 cm from your eye.Estimate the diameter of the iris of your eye.
A car originally traveling at 30m/s manages to brake for 5.0 seconds while traveling 125 m downhill. At that point the brakes fail. After an additional 5.0 seconds it travels an additional 150 m dow
In a materials testing laboratory, a metal wire made from a new alloy is found to break when a tensile force of 90.8 N is applied perpendicular to each end. If the diameter of the wire is 1.74 mm, wha
For this exercise, you will draw a ray tracing diagram for each question. Your ray tracing diagram should show the image location for each question answered.
The following questions ask you to solve problems involving topics we've covered this week. Work each problem, and post an image of your work for each question, along with a brief description of how
Two people carry a heavy electric motor by placing it on a light board 2.00 m long. One person lifts at one end with a force of 100 N, and the other lifts the opposite end with a force of 900 N.What i
The Earth has an angular speed of 7.272·10-5 rad/s in its rotation.Find the new angular speed if an asteroid (m = 4.99·1022 kg) hits the Earth while traveling at a speed of 2.19·1
A circuit consists of an ideal ac generator, a 25 µF capacitor, and an 65? resistor, all connected in series. The output of the generator has a peak emf of 20 V, and the armature of th
Calculate the Q value in MeV for the double Beta decay of 128Te (atomic mass 127.904461 a.m.u.) to 128Xe (atomic mass 127.903531 a.m.u.).
Consider a rocket launched from Vandenberg AFB, CA (longitude=34.6 degrees) having an initial velocity of 3 km/s in the northerly direction relative to the launch site. At this instant, the accelerati
A circuit consists of an ideal ac generator, a 20 µF capacitor, and an 90? resistor, all connected in series. The output of the generator has a peak emf of 20 V, and the armature of th