A vertical string supports a block having a mass of 17.0 kg as shown in the figure. Calculate the magnitude of the tension force (in N) exerted by the string on the block. (The local free-fall acceleration is 9.80 m/s2.) N
An electric field given by E→ = 6.8i^ − 5.5(y2 + 5.6)j^ pierces the Gaussian cube of edge length 0.270 m and positioned as shown in the figure. (The magnitude E is in newtons per coulomb and the position x is in meters.) What is the electric flux through the (a) top face, (b) bottom face, (c) left face, and (d) back face? (e) What is the net electric flux through the cube? (a) Number Units (b) Number Units (c) Number Units (d) Number Units (e) Number Units
If a charge, Q, is located at the center of a spherical volume of radius R0 = 3.03 cm and the total electric flux through the surface of the sphere is Φ0 = −2.98 Nm2 C, what is the total flux through the surface if the radius of the sphere is changed to R = 15.8 cm (in Nm2 C).
A 2.00−nF capacitor with an initial charge of 4.32 μC is discharged through a 2.62−kΩ resistor. (a) Calculate the current in the resistor 9.00 μs after the resistor is connected across the terminals of the capacitor. (Let the positive direction of the current be define such that dQ/dt > 0.) mA (b) What charge remains on the capacitor after 8.00 μs? μC (c) What is the (magnitude of the) maximum current in the resistor? A
The figure below shows a point-like charge q = 9.4 μC held at point A, distance a = 75 cm away from the end of a thin insulating rod of length c = 49.5 cm that carries uniform linear charge density λ = 0.27 μC/cm. How much work W needs to be done to move this charge q to point B, also shown in the figure, which is distance b = 9.3 cm away from the end of the rod? : W = J.
A 1.80−kg object is held 1.15 m above a relaxed, massless vertical spring with a force constant of 305 N/m. The object is dropped onto the spring. (a) How far does the object compress the spring? m (b) Repeat part (a), but this time assume a constant air-resistance force of 0.650 N acts on the object during its motion. m (c) How far does the object compress the spring if the same experiment is performed on the Moon, where g = 1.63 m/s2 and air resistance is neglected? m