State whether the following statements are true or false. If flase, correct it. 1) Force has magnitude as well as direction.
2) Friction does not produce heat.
3) The unit of frequency is decibel.
4) The copper rod can be charged by friction, if held by hand.
5) The angle is sometimes equal to angle of reflection.
6) Mars is also called as the red planet.
7) Seminal vesicles is a part of female reproductive system.​

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

What structural formula represents 4 electrons shared between two atoms?

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0