answers are
1 a negative force sign indicates an attractive force while a positive sign indicates a repulsive force
2 yes, because its sign is always negative
3 positive because the product of two positive numbers is positive
4 4.45 x 10^-7 N
5 m2=910kg
1. What does the sign of a foce indicate?
A. A negative sign indicates a repulsive force, while a positive sign indicates an attractive force.
B. A negative sign indicates an attractive force, while a positive sign indicates a repulsive force.
C. A negative sign indicates a strong force, while a positive sign indicates a weak force.
D. A negative sign indicates a weak force, while a positive sign indicates a strong force.
2. Is gravitational force always attractive?
A. no, because its sign is always positive
B. yes, because its sign is always negative
C. yes, because its sign is always positive
D. no, because its sign is always negative
3. The product of m1m2 in the formula for gravitational force is always
A. negative, because the product of two negative numbers is negative.
B. positive, because the product of two positive numbers is positive.
C. negative, because the product of two positive numbers is negative.
D. positive, because the product of two negative numbers is positive.
4. What is the magnitude of the gravitational force on each mass when m1=600 kg, m2=400 kg, and their centers are 6 meters apart?
A. 4.45 X 10^-17 N
B. 6.67 X 10^-17 N
C. 2.97 X 10^-7 N
D. 6.41 X 10^-7 N
5. What is the mass of m2 when m1=860 kg, the centers of the masses are 2.4 meters apart, and the magnitude of the gravitational force on each mass is 9.07×10^−6 N?
A. m2 = 91 kg
B. m2 = 910 kg
C. m2 = 810 kg
D m2 = 107 kg
My answers
1. A
2. A
3. D
4. C
5. B
1 answer