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1-Earth carries a net charge of -4.1 105 C. The force due to this charge is the same as if it were concentrated at Earth's center. How much charge would you have to place on a 9.0 g mass in order for the electrical and gravitational forces on it to balance?
2-An electron placed in an electric field experiences an electric force of 5.3 10-10 N. What is the field strength?
3-A 68 nC charge experiences a 140 mN force in a certain electric field.
A- Find the field strength that a 43 µC charge would experience in the same fieldB- Find the force on the 43 µC charge.
4-What is the line charge density on a long wire if the electric field 44 cm from the wire has magnitude 220 kN/C and points toward the wire?
5-How strong an electric field is needed to accelerate electrons in a TV tube from rest to one-fifth the speed of light in a distance of 5.0 cm?
A LASIK vision correction system uses a laser that emits 10 ns-long pulses of light, each with 2.5 mJ of energy. What is the average power of each laser pulse
If the lattice constant of the FFC structure is 4.75A, what is the surface density of atoms for a (100) plane
A narrow tube open at one end has varibale length. When a vibrating tuning fork is held near one end, What is a possible frequency of the tuning fork
A 1.0 mm diameter mall bearing has 2.0 x 10^9 excess electrons. What is the ball bearing's potential
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. what is the mass of the helium
A 3 microcoulomb charge is at the coordinated (3,4)mm. A -4 microcoulomb charge is at the coordinates (-2,5)mm. find the Electric field vector in polar coordinates at the origin
You are using the 10 cc syringe and the 50 cc syringe. The masses of the 10 cc piston and 50 cc piston are 15.2 g and 60.6 g, respectively. What is the predicted slope
Two people are carrying a uniform wooden board that is 3.00 m long and weighs 160 N. If one person applies an upward force equivalent to 60 N at one end, at what point does the other person lift . If the tangential acceleration of a yo-yo at the en..
A cubic meter of copper has a mass of 8930kg. The block of copper is lowered into a lake by a strong cable until the block is copletely submerged
light of wavelength 600nm is incedent normally on a surface of area 4 cm^2. Determine the power output of the light source
at some point in space,the x and y components of the electric field are Ex= 1.73 N/C, respectively and Ey= 3.75 N/, respectively. What is the net charge of the particle
You have been asked to design a "ballistic spring system" to measure the speed of bullets. Find an expression for the bullet's speed
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