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An aluminum sphere has a diameter of 15.6 cm. What is its mass? (Refer to the table in the densities of common substances for aluminum)
What do you mean by the Youngβs modulus for steel is π = π. π Γ ππππ π΅πβπ
? Explain
briefly
5 cubic meter tank contains chlorine at 250 kPa and 30 degrees Celsius after 2.5 kg of chlorine has been used.
Determine:Β
Β
(a) the original mass of chlorine in the tank in kg
(b) the pressure (kPa) of chlorine in the tank if the original temperature was 315K
A reservoir contains 2.83 cubic meter of CO at 6895 kPa and 23.6 degrees C. A cylindrical tank with h=1.5D is filled from the reservoir to a pressure of 3697 kPa and a pressure of 3697 kPa and a temperature of 15.4 degrees C, while the pressure and temperature in the reservoir decreases to 6205 kPa and 18.3 degrees C respectively.a) the total mass of CO transferred to the tank in kg, b) the total volume of the tank in cubic meter, c) the diameter of the tank in mm
Mr. Ampere, of weight 680 N, was contacted to install wireless security cameras at a very busy shop. The ladder he used was 4.5 m long and its mass was 5 kg. It took him 18 s to reach the roof top of the shop is 4 m high. What would be Mr Ampere average power output
A boy weight 500N sitting on a see-saw. He sits 2.0 m from the pivot. What is the force (F) needed to balance the see-saw?
Eight boys are equally spaced about a pushball and each exerts a force upon it toward the center, as shown. Each boy in position 1, 3, and 7 exerts a force of 70 N, and the rest of the boys exert 50 N each. What force is needed to keep the ball at rest?Β *
The electric field and the magnetic field in free space are given by
E=\frac{50}{\rho}\cos(10^{6}t+\beta z)a_{\phi} V/mE=
Ο
50
β
cos(10
6
t+Ξ²z)a
Ο
β
V/m
H=\frac{H_{o}}{\rho}\cos(10^{6}t+\beta z)a_{\rho} A/mH=
Ο
H
o
β
β
cos(10
6
t+Ξ²z)a
Ο
β
A/m
Express these in phasor form and determine the constants H_{o}H
o
β
and \betaΞ² such that the fields satisfy Maxwellβs equations.
- A slim rod 2.0 m long has two small 0.50-kg bodies attached at its two ends and a 0.25-kg body at its midpoint as shown. Find the moment of inertia about an axis perpendicular to the rod has negligible mass.
A roller coaster ride in a park includes a vertical drop of 60 m. Assume that the roller coaster has a speed of nearly zero when it reaches the top of the hill. Neglecting friction, find the speed of the riders at the bottom of the hill
