Question 27 1 pts
Jonah places a 9.05 kg box on a 21° ramp. The box accelerates at a rate of 0.44 m/s2. What is the
coefficient of kinetic friction between the box and the ramp?
a. 0.21
b. 0.41
c. 0.34
d. 0.54

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

Blank liquids and gases exert a buoyant force on objects placed in them

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.