I need this ASAP, show all work please!!!

5.) Three vectors have the same magnitude of 14 units. They make angles of θ, 2θ, 3θ with respect to the x axis, where θ = 20 degrees. What is their vector sum?

Acceleration, tension

4.) A 0.840 kg glider on a level air track is joined by strings to two hanging masses. The strings have negligible mass and pass over light, frictionless pulleys. a.) Find the acceleration of the masses and… b.) Find the tension in the strings when the air flow is turned off and the coefficient of friction between the glider and the track is 0.47.

Optics, magnification, etc

Please help with 48, 56, 62, 72, 86 ONLY 48) What is the magnification of the object when the object is 35 cm from the lens (see attachment please)

I need this problem worked out completely. Show ALL work with ANSWER please!! ASAP

Please don't just send me a formula. I'm Paying you to give me the correct answer. Thank you. 1.) A horizontal force of 3.00 N is applied to a 1.00-kg radio, initially at rest on a table with a level surface. a.) Will the radio move if the coefficient of the friction is 0.45? b.) What is the coefficient of friction if it just begins to move? c.) What is its acceleration if the coefficient of the friction is only 0.02?

I need this problem worked out completely. Show ALL work with ANSWER please!! ASAP

A 0.0050-kg bullet traveling with a speed of 200 m/s penetrates a large wooden fence post to a depth of 0.030 m. What was the average resisting force exerted on the bullet?