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An object slides down at the top of a hill starting from rest it takes 8 seconds to slide down 100 meters at an angle of 60. Then what will be the coefficient of kinetic friction?
two particles a and b are released from rest, having equal charges of -8 x10-6 c and initially separated from each other by 0.025m. the masses of particles a and b are 6.25 x10-6 kg and 3.75x10-6 kg respectively. find the magnitude of the initial accelerations of particles a and b.
During a time interval of 90 minutes a car
(a) Runs at 50 km/hr for the first 20 min,
(b) Accelerates uniformly to 90 km/hr for the next 10 min,
(e) Runs at the speed of 90 km/hr in the next 40 min, and (d) Decelerates uniformly to a stop in the remaining 20 min.
Calculate the (a) acceleration (b) deceleration (e) average speed during entire period.
A ball is thrown downward from the roof of a 24 m tall building with an initial speed of 5 m/s. (a) Use energy principles to find the speed with which the ball hits the ground. (b) Find the time it took the ball to reach the ground. (c) If the ball were thrown upwards from the roof with the same speed repeat the calculations for parts (a) and (b)
You havpossible e five 10F capacitors.Show all the possible connections for the five capacitors to produce a total capacitance of 50.0F?
The relative permittivity of a dielectric is 2.25
a) what is its permittivity?
b)What will be the capacitance if its dielectric is inserted into 7.8 uFair capacitor?
The parallel plates of an air capacitor are separated by 2.25 mm.Each plate carries a charge of 6.50nC.The manitude of the electric field of the plates is 4.74x10^5V/m.Find the a) potential difference between he plates
b) capacitance and
c)area of the plate.
Two charges, -8 C and -4C are positioned 10 meters from each other. What does the -8C feel as a result of the -4C?
1. How much work is required to move a charge of 4nC from a point 2m away to a
point 0.5 m away from a point charge of 60nC? What is the potential difference
between these points?
2. An electron is accelerated from rest through a potential difference of 15V. What is the change in electric potential energy of the electron?
3. Two-point charges Q1 = 4.5 μC and Q2 = 8.5 μC are initially very far apart. They are then brought together, with a final separation of 3.5 mm. How much work does it take to bring them together?
4. A 0.500 cm diameter plastic sphere, used in a static electricity demonstration, has a uniformly distributed 40.0 pC charge on its surface. What is the potential near its surface?
you normally drive on the freeway between butuan city and cagayan de oro city at an average speed of 100km/hr (62.14 mi/hr), and the trip takes 4 hours and 30 mins on a friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 70km/hr (43 mi/hr). how much longer does the trip take?
