A 60-kg person is carrying a 3-kg box walking (1) a ramp at a constant speed of 0.5 m/s. The ramp has 35° angle and 50m slope length. At the same time, 25 kJ of heat is being transferred (2) the box and 10 kJ/kg (3) of internal energy took place inside the box. Determine the work done by/to the box. Clearly indicate your system and assumptions for full mark. (1) (2) (3) down to increase

A 60-kg person is carrying a 3-kg box walking (1) a ramp at a constant speed of 0.5 m/s. The ramp has 35° angle and 50m slope length. At the same time, 25 kJ of heat is being transferred (2) the box and 10 kJ/kg (3) of internal energy took place inside the box. Determine the work done by/to the box. Clearly indicate your system and assumptions for full mark. (1) (2) (3) down to increase

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A body of mass 10 kg is initially stationary on a 45 degree inclined plane , coefficient of friction is 0.5. The body slides down the plate and attains a velocity of 20 m/s. Find out distance travel by the body along the plane.
Asap please
1 For the car lift shown in the figure, determine the force required to be applied (F1), for the following cases: (i)A1 = 0.1 m2 and A2 = 0.25 m2 (ii)A1 = 0.05 m2 and A2 = 0.25 m2 Take mass of the car as 1500 kg.
A 200 g block is pressed against a spring of force constant 1.4 kN/m until it is compressed by 10 cm. The spring rests on a horizontal plane. Determine how much the block moves before stopping if the coefficient of friction is 0.3.
Fluid Mechanics
Hamdan Auto uses bydraulic press to raise 3500 kg truck. If the area of the input piston is 10 cm and the area of the other piston is 540 cm, what force (in N) must be 556 p o Tapplied a the input piston to lin the truck 763 A O 545 BO 778CO 30EO 648FO
An airport escalator is designed to move 40 people, 75 kg each, upward at a constant speed of 0.6 m/s at 45o slope. Determine the minimum power input needed to drive this escalator. Neglect friction and drag. Please give your answer in kW.
An air compressor handles 8.5 m3/min of air with a density of 1.26 kg/m³ and a pressure of 1 atm and it discharges at 445 kPa (gage) with a density of 4.86 kg/m³. The change in specific internal energy across the compressor is 82 kJ kg, and the heat loss by cooling is 24 kJ /kg. Neglecting changes in kinetic and potential energies, find the power in kW.
A fluid undergoes a frictionless process in a closed system form v1=5ft to v2=2ft^3 in accordance with the relation v=36/(p-8) where p is the psia and v is ft^3. During the process, the fluid rejects 30 BTU/lbm. Compute the change of heat transfer.
A platform supported by 4 parallel springs: 2 long and 2 short springs, have a spring constant of 7.30 kN/m and 10.95 kN/m. A 55 kg box is dropped onto it from a height of 1.5m. Find the compression of each spring if the short springs are 0.1m shorter than the long springs.
On flat ground, a 70 kg person requiresabout 300 W of metabolic power to walk at a steady pace of5.0 km/h 11.4 m/s2. Using the same metabolic power output, that personcan bicycle over the same ground at 15 km/h. How many times greater is the kinetic energy of the person when biking than when walking? Ignore the mass of the bike. (a) 1.7; (b) 3; (c) 6; (d) 9.