EASY MULTIPLE CHOICE QUESTIONS! PLEASE HELP!

Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of one’s birth. The on

sp2606 [1]

Answer:

$F_f=7.0035\times 10^{-7}\ N$

$F_j=8.45\times 10^{-6}\ N$

Explanation:

(a)

mass of baby, $m_b=4.2\ kg$

mass of father, $m_f=100\ kg$

distance between father and baby, $d=0.2\ m$

Now, the gravitational force on baby due to father:

$F_f=G \frac{m_b.m_f}{d^2}$

$F_f=6.67\times 10^{-11}\times \frac{4.2\times 100}{0.2^2}$

$F_f=7.0035\times 10^{-7}\ N$

(b)

distance between baby and Jupiter, $r=6.29\times 10^{11}\ m$

We have mass of Jupiter, $m_j=1.898\times 10^{27}\ kg$

Now, the gravitational force on baby due to planet Jupiter:

$F_j=G \frac{m_b.m_j}{r^2}$

$F_j=6.67\times 10^{-11}\times \frac{4.2\times 1.898\times 10^{27}}{(6.29\times 10^{11})^2}$

$F_j=8.45\times 10^{-6}\ N$

We find that the gravitational force due to Jupiter is considerably greater than the force due to mass of father.

3 0

4 years ago

When we look at a blue recycle bin, we see blue because...

storchak [24]

When light hits an object, that object absorbs some light, and reflects other light. A blue recycle bin absorbs red and green light, but reflects blue light. The blue light then hits your retina at the back of your eye and a signal is sent to the visual cortex of your brain. Your brain then perceives this signal as colour.

6 0

3 years ago

When you drop a 0.43 kg apple, Earth exerts

N76 [4]

The magnitude of the Earth's acceleration is $7.0\cdot 10^{-25} m/s^2$

Explanation:

First of all, we start by calculating the magnitude of the force exerted by the apple on the Earth. According to Newton's third law, this is equal to the force exerted by the Earth on the apple, which is the weight of the apple, given by:

$F=mg$