<span>There is only one thing that you must keep in mind, and that is that the ball hitch and coupler for towing have to be the same size. If not, then you can create a problem which can in turn result with damage to you and your boat and you would have to spend a lot of money to fix things or get a new boat.</span>
Answer: plane speed is 94.87m/s
Explanation: since the plane move upward in a semicircular path, the acceleration is a centripetal acceleration with radius of 500metre. But the Centripetal acceleration is given as
Centripetal acceleration
= Speed ²/radius
Making speed subject of formula we have,
Speed² = centripetal acceleration*radius
Speed² = 18*500
=9000
Speed =√9000
= 94.87m/s
Answer:
153.9 g/mol
Explanation:
The freezing point depression for an ideal solution is given by the expresion:
ΔTf = Kf m
where:
ΔTf is the freezing point depression
Kf is the freezing constant of the solvent
m is the molalility which mol of solute per kilogram solvent
The moles of solute is the mass divided into its molecular weight, MW
substituting into the equation, we have:
4.49 º C = 6.91 ºC/m x [(1.0 g/MW) / 0.010 kg]
4.49 º C = 6.91 ºC/mol/kg x [(1.0 g/MW) / 0.010 kg]
⇒4.49 = 691 g/mol/MW
⇒ MW = 691 / 4.49 g/mol = 153.9 g /mol
If the only answers are kinetic and potential, then blank 1: potential, blank 2: kinetic
