If a sealed syringe that contains some gas in heated in which direction will the syringe plunger move

The movement of the plunger will take place in outward direction elevating the volume in the syringe.  

The upsurge in heat will lead to an elevation in temperature of the gas particles. This elevation in temperature will lead to an elevation in motion. The elevation in motion (kinetic energy) will result in an increase in pressure within the syringe. This elevation in pressure will further result in an upsurge in the volume of the syringe.  

According to Charle's law, the temperature and volume are directly equivalent, that is, as the temperature increases the volume will also increase. Thus, an increase in temperature and heat will result in an increase in volume making the plunger to move outward.  

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).