Answers created by Md H S Shohrawardy

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If a 600-N woman sits on the floor, how much force does the floor exert on her?
A charge of $- 2 C$ $-2 C$ is at $(3, - 7)$ $(3, -7 )$ and a charge of $1 C$ $1 C$ is at $(- 3, 4)$ $(-3 , 4 )$ . If both coordinates are in meters, what is the force between the charges?
How much work does it take to raise a $3 k g$ $3 kg$ weight $81 m$ $81 m$ ?
A projectile is shot at an angle of $\frac{π}{3}$ $pi/3$ and a velocity of $5 \frac{m}{s}$ $5 m/s$ . How far away will the projectile land?
What is the kinetic energy of a $16 k g$ $16 kg$ object moving at $\frac{4}{3} \frac{m}{s}$ $4/3 m/s$ ?
What is the dot product of $< - 2, 5, - 7 >$ $<-2,5,-7>$ and $< 8, - 3, 1 >$ $<8,-3,1>$ ?
Question #7574f
What is $| | < 4, 9, 7 > - < 9, - 1, 2 > | |$ $|| <4, 9, 7 > - < 9, -1, 2> ||$ ?
If an object is dropped, how fast will it be moving after falling $12 m$ $12 m$ ?
A ball with a mass of $9 k g$ $9 kg$ moving at $14 \frac{m}{s}$ $14 m/s$ hits a still ball with a mass of $18 k g$ $18 kg$ . If the first ball stops moving, how fast is the second ball moving?