What are the multiple choice answers?
The distance of separation between the two masses is 0.927 m.
<h3>Gravitational force:</h3>
This is the force that exists between two masses in the universe.
To calculate the distance of separation of the masses, we use the formula below.
- F = GMm/r².............. Equation 1
Where:
- F = Gravitational force
- m = First mass
- M = Second mass
- G = Universal constant
- r = distance of seperation.
Make r the subject of the equation.
- r = √(GMm/F)................... Equation 2
From the question,
Given:
- F = 3.3×10⁻⁷ N
- m = 61 kg
- M = 75 kg
- G = 6.69×10⁻¹¹ Nm²/kg²
Substitute these values into equation 2
- r = √(61×75×6.69×10⁻¹¹)/(3.3×10⁻⁷)
- r = 0.927 m
Hence, The distance of separation between the two masses is 0.927 m
Learn more about Gravitational force here: brainly.com/question/11359658
Explanation:
Given
Velocity v = 23.0m/s
Distance S = 3.45m
Required
Time it will take the skier to reach the ground;
Using the equation of motion;
S = ut + 1/2gt²
3.45 = 23t + 1/2(9.8)t²
3.45 = 23t + 4.9t²
4.9t²+23t-3.45 = 0
Factorize;
t = -23 ±√23²-4(4.9)(-3.45)/2(4.9)
t = -23 ±√529+67.62/9.8
t = -23±√596.62/9.8
t = -23±24.43/9.8
t = 1.43/9.8
t = 0.146 secs
Hence take the skier 0.146 secs to reach the ground.
b) Horizontal distance covered is the range;
Range = U√2H/g
Range = 23√2(3.45)/9.8
Range = 23√6.9/9.8
Range = 23√0.7041
Range = 23(0.8391)
Range = 19.29m
Hence the horizontal distance travelled in air is 19.29m
1)Baby bird cannot fly. Their mother has to feed \bf\underline{them}them
2. Vijay likes riding my bicycle. I sometimes lend \bf\underline{it}it to \bf\underline{him}him
3. Sooraj and I are brothers. \bf\underline{we\:both}weboth share the same bedroom.
4. Ravina isn't well. Dad is taking to the doctor. (No personal pronouns required)
<h3>5. My sister is a teacher. \bf\underline{She}She teaches Maths.</h3>
