What is the only force acting on a projectile if you ignore air resistance

Karen has a mass of 56.2 kg as she rides the up escalator at Woodley Park Station of the Washington D. C. Metro. Karen rode a distance of 60.4 m, one of the longest escalators in the world. The acceleration of gravity is 9.8 m/s 2.

Why can people float effortlessly on the dead sea?

Abdul is pushing his 20. kg little brother on a merry go round with a radius of 2.0m. If his little brother is on the edge of the merry go round and has a angular momentum of 360 kg m^2sec. what is his speed?

What are the particles that made baryons like proton and neutron

What mRNA sequence would result from the following DNA sequence? ATG GAC TCC TAG * AUG GAC UCC UAG or UAC CUG AGG AUC or TAC CTG AGG ATC

Electricity problem (coulomb's law)

An observer (O) spots a plane (P) taking off from a local airport and flying at a 29° angle horizontal to her line of sight and located directly above a tower (T). The observer also notices a bird (B) circling directly above her.

In order for convection to occur, you must have

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?

In what way are all forms of potential energy the same?