Answer:
250 N
Explanation:
Assuming both girls are pushing in the same direction
Given
Total amount of force,they exert on box= 500 N
let <u>force exerted by Macy</u> =
<u>force exerted by Sam</u>=
⇒ +=500 N
But also given <u>both girls push with equal amount of force</u>
⇒ =
Therefore
+ =500 N
=500 N
=250 N
⇒ =250 N , = 250 N
Answer:It can run in the same direction but it increases its speed.
Explanation:
D
The student's conclusion shows experimental bias
Just because most of nis classmates like puffed cereal ,it is inappropriate to conclude puffed cereal is better than oats cereal
Answer:
3.122×10¹⁴ g/cm³
Explanation:
Diameter of neutron star = 23 km = 2300000 cm
Radius of neutron star = 2300000/2 = 1150000 cm = r
Mass of neutron star = 1.989 × 10³⁰ kg = 1.989 × 10³³ g = m
Volume of neutron star
Density = Mass / Volume
∴ Density of neutron star is 3.122×10¹⁴ g/cm³
There is strong evidence indicating that 3.8 billion years ago there was a higher impact rate. This deduction starts from comparing the number of craters in the lunar highlands with those of the Mary. If this comparison is made, it will be observed that there are 10 times more craters in the highlands than in a similar area of Mary. It should be borne in mind that through radioactive dating processes the samples indicate that there is a slightly greater antiquity in the highlands than those of Maria. This allows us to deduce that if the impact rates had been constant, the highlands would have been 10 times older. They would have to be formed 38 billion years ago, long before the universe itself began.
Therefore one of the most obvious reasons is there are ten times more craters on the older highlands than the Younger Maria.