Question 186 ▼ What is the magnitude of a·(b×c) equal to? Sum of vector magnitudes Area of parallelogram Product of vector lengths Volume of parallelepiped formed by a, b, c Check Answer Report Question
Question 187 ▼ What does the scalar triple product a·(b×c) represent? Area of triangle Magnitude of resultant vector Volume of sphere Volume of the parallelepiped Check Answer Report Question
Question 188 ▼ What is the area of the triangle formed by vectors a and b? |a × b| (1/2)|a × b| |a + b| |a · b| Check Answer Report Question
Question 189 ▼ A child runs inside a moving trolley. What determines the speed of the center of mass of the system? Friction between child and trolley Child's running speed External air resistance Total momentum and total mass Check Answer Report Question
Question 190 ▼ What happens to the speed of the center of mass of a trolley-child system when the child runs inside the trolley? Becomes zero Increases Decreases It remains V Check Answer Report Question