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Two small spheres spaced apart have equal charge. How many electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10^-21 N?
A 5 kg object is located at a distance of 9.0 x109 km from the center of a larger object whose mass is 2.0 x 1030 kg.
a. What is the size of the force acting on the smaller object
b. What is the size of the force acting on the larger object?
c. What is the acceleration of the smaller object when it is released?
d. What is the acceleration of the larger object when it is released?
A person is holding a 5.0 kg mass in one hand as shown in the figure above.
You can ignore the mass of the forearm itself.What is the force exerted by the bicep in order to keep the arm horizontal?(in N to 2s.f)
- two charged spheres q1 = 2.00x10^11 C; and q2=-5.00x^-8C are held fixed at positions 0.0500m apart. Calculate the magnitude of each electrostatic force between two spheres
- Determine the electric flux of an electric field E = 2000 N/C with an area of 10m^2 and 45 degree angle
- compute for the amount of charge (q) that passes through a conductor in 10 seconds with the amount of current equal to 20 a.
A sound wave of frequency 300Hz travels with speed 340ms–¹along the negative x-direction. Each point of the medium moves up and down through a total distance of 5.0mm. Determine the necessary parameters to represent the wave mathematically.
A force of 250 N exerted at an angle of 30° above the horizontal is needed to keep a 90 kg block moving along a
cement floor. Find the coefficient of kinetic friction.
0.08 kg of steam at 100 kpa,dryness fraction of 0.85 is heated at constant pressure to a temperature of 200°C . Determine the changes in volume, internal energy, enthalpy and entropy
Calculate the time taken for a car to cover a distance of 100m if the initial speed is 10km/h and it constant acceleration of 1.5m/s
2.) 20J of work are required to move 2.0C of charge between two points in an electric field. a.)Find the electric potential difference between the two points.
3.)How much work would be required to move 5.0C of charge between the same two points of the problem above?
Please answer with a detailed explanation & Solution.
Thanks
What is the maximum kinetic energy in eV of electrons ejected from sodium metal by 450-NM EM radiation, given that the binding energy is 2.28 eV
#333702 on Dec 2022