The velocity vector of the planet points toward the center of the circle is the following is true about a planet orbiting a star in uniform circular motion.
A. The velocity vector of the planet points toward the center of the circle.
<u>Explanation:</u>
Motion of the planet around the star is mentioned to be uniform and around a circular path. Objects in uniform circular motion motion has constant angular speed but the velocity of the object will not remain constant. Since the planet is in circular motion the direction of velocity vector at a particular point is tangential to the circular path at that particular point.
Thus at every point, the direction of velocity vector changes and this means the velocity is never constant. The objects in uniform circular motion has centripetal acceleration which means that velocity vector of the planet points toward the center of the circle.
Answer:
d= 1.5 g/cm3
Explanation:
datos
m= 30g
v= 20cm3
d=?
formula
d= m / v
solución
d= 30g / 20cm3 = 1.5g/cm3
The definition of speed is (distance covered) / (time to cover the distance) .
So a unit of speed has to be (a unit of length) / (a unit of time) .
Here are several perfectly fine units of speed:
-- miles per hour
-- feet per second
-- meters per second
-- kilometers per hour
-- inches per second
-- centimeters per minute
-- yards per Century
-- furlongs per fortnight
-- nanometers per microsecond
-- Smoots per week
-- parsecs per millenium
Answer:
a) iv. Displacement per unit time
b) ii. m/s2
c) this question is wrong
d) iv. m
<h3><u>WWF in protection of Turtle eggs:</u></h3>
World Wildlife Fund (WWF) is an NGO that primly aims wildlife preservation. To protect marine turtles and avoid its poaching, WWF works through TRAFFIC, the Wildlife trade monitoring network.
Turtle eggs are highly demanded for human consumption, either raw or as expensive dishes in star rated restaurants. WWF along with TRAFFIC promotes ecotourism by raising awareness to stop preferring turtle products. It establishes and strengthens MPA's (Marine Protected areas) areas where turtle nesting is primarily observed and thus turtles are free and safe to nest, feed and migrate.
