A metal sphere with a net charge of q=1 C and mass m = 1 g is suspended from the ceiling by a light string with a tension T on it. A uniform electric field, E , is applied vertically downward on the sphere. Derive an expression for the tension on string if the charge is -1C and +1c and E=5000N/C

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?

Asap 1. which surface feature of the moon is characterized by mountainous areas? question options: maria terrae regolith craters 2.which statement describes surface features called maria on the moon? question options: layers of dust and rock deep areas of cooled lava deep, rocky and barren valleys highlands and mountainous areas

Which of the following is an example of units for speed