8y. The magnitude of A+B is: A) 4.3 B) 5.1 C) 7.8 D) 6.4 E) 9.2 5) An ice hockey player strikes a puck of mass 170g with his stuck, accelerating it along the ice from rest to speed of 20m/s over a distance of 40cm. What force must he exert (in N)? (Assume the acceleration is constant and without friction) A) 48 B) 72 C) 85 D) 96 E) 57 6) A 80kg box standing on a floor has a coefficient of static friction of 0.5. A boy approaches the box and leans horizontally against it. The maximum force the boy can exert before the box begins to slip (in N) is: C) 549 D) 332 E) 392 A) 618 B) 425 7) From figure below, the torques due to F1 and F2 relative to point p (in N.m) is: 4m-

8y. The magnitude of A+B is: A) 4.3 B) 5.1 C) 7.8 D) 6.4 E) 9.2 5) An ice hockey player strikes a puck of mass 170g with his stuck, accelerating it along the ice from rest to speed of 20m/s over a distance of 40cm. What force must he exert (in N)? (Assume the acceleration is constant and without friction) A) 48 B) 72 C) 85 D) 96 E) 57 6) A 80kg box standing on a floor has a coefficient of static friction of 0.5. A boy approaches the box and leans horizontally against it. The maximum force the boy can exert before the box begins to slip (in N) is: C) 549 D) 332 E) 392 A) 618 B) 425 7) From figure below, the torques due to F1 and F2 relative to point p (in N.m) is: 4m-

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

24] (5 Marks) The 2-lb brick slides down a smooth roof, such that when it is at A it has a velocity of 5 ft/s. Determine the speed of the brick just before it leaves the surface at B and the speed at which it hits the ground. A. Speed at B A) 21.48 f/s, B) 31.48 fl/s, C) 41.48 fl/s 15 t Speed at C A) 34.1 ft/s, B) 44.1 f/s, C) 54.1 ft's 30 ft
18. Starting from a point S on a level ground, a boy on his bike travels 700 m due south and then turns immediately in the direction N60°E and travels at the rate of 5.00 m/s. How fast is the distance between the boy and the starting point S changing 3 minutes after he turned? A) 3.82 m/s B) 4.67 m/s C) 4.15 m/s D) 3.36 m/s
16. An small object of mass m attached to the end of a light string rotates in a horizontal plane along a frictionless table with uniform speed v. A small putty of mass 0.5m suddenly attached itself to the rotating mass. What will be their final speed? 2v A) 3 3v B) C) 2 D)
35 - An electronic device will be cooled by a fan with a volumetric flow rate of 0.34 m³/min. If the air density is 1.2 kg/m³ and the average speed of the air is not desired to exceed 100 m/min, what would be the outer diameter of the fan? a) 6.5cm B) 7.0cm NS) 7.5 cm D) 7.2cm TO) 8.0cm
Q1] Answer the following questions: The position of particle is given by s = (t² – 6t + 4)m, where t is in seconds. 1) What is the time when the velocity of the particle is zero? a) 6 m/s b) 12 m/s c) 4 m/s d) 11 m/s e) 21 m/s f) 3 m/s g) None of them 2) What is the total distance traveled by the particle when (t = 0, t = 2, and t = 5) seconds? a) 4 m b) 9 m c) 22 m d) 11 m e) 31 m f) 8 m g) None of them
29 - Water is drawn from the bottom of a large tank filled with water open to the atmosphere. If the outlet velocity is 7.2 m/s, what could be the height of the water in the tank? a) 2.64m B) 4.38m NS) 3.65 m D) 5.46 m TO) 2.20m 30 - What would be the weight of an object with a mass of 100 kg in a place where the gravitational acceleration is 8 m/s²? a) 42.2 kgf B) 98.1 N NS) 800 N D) 9810 N TO) 196.2 N
6. Starting from a point P, a car travels 20 km due east and then travels in the direction N50°W until it reaches its destination point which has a bearing of N10°W from the starting point. How far is the car from its destination point? A) 18 km B) 20 km C) 24 km D) 22 km
The radius of the blood vessel is 1.2 cm with a viscosity and density of 0.004 kg/(m-sec) and 1070 kg/m^3. Find the Reynolds number if the flow velocity is 0.2420 m/sec? a)1654 b)1754 c)1354 d)1454 e)1554
20. A light is placed on a horizontal ground 40 ft from a building. A man 6 ft tall walks from the light toward the building at a rate of 5 ft/s. Find the rate at which his shadow on the building is decreasing when he is 16 ft from the building. A) 2.896 ft/s B) 2.333 ft/s C) 2.083 ft/s D) 2.667 ft/s
6- A motorcycle starts from rest at s = 0 and travels along a straight road with the speed shown by the v-t graph. What is the position of the motorcycle when t = 5 s? c) 15 m/ s f) None of them a) 59 m/ s v (m/s) b) 12 m/ s e) 66 m/ s d) 47 m/ s v = 1.251 =5 v = -1+ 15 t (s) 10 15
A cylinder of radius R = 2 (m) can freely rotate around its axis. The force F = 20t – 5t? (N) applied tangentially to the lateral surface of the cylinder changes with time. The cylinder is initially at rest and its moment of inertia is 15 (kg.m?). How many cycles does the cylinder make before it starts rotating in the opposite direction? Take -3. A) 3 В) 4 C) 5 D) 6 E) 8
54. A man is marooned at rest on level frictionless ice. In desperation, he hurls his shoe to the right at 15 m/s. If the man weighs 720N and the shoe weighs 4.0 N, the man moves to the left at approximately: A) B) C) 2.1 x 10- m/s 8.3 x 10- m/s 15 m/s 2.7 x 10-° m/s E)