Answer:
Path 3 and Path 1
Explanation:
Along Path1andPath3, the distance travelled will be different than the displacement.
In Path1 and Path3 the distance travelled will be more than the displacement. Whereas, in Path2, the displacement will be as same as the distance travelled because in path 2, the distance travelled itself is the shortest distance from initial point ( A ) to final point ( B ).
But, inPath1 and Path3, the total distance travelled isn't the shortest distance from initial point ( A ) to final point ( B ), hene displacement and distance travelled will be different.
Along Path 1 and path 3 your distance traveled be different than your displacement.
Distance is the total length of the path traveled by an object. It is a scalar quantity, meaning it has only magnitude and no direction.
Displacement is the change in the object's position from its initial to its final position. It is a vector quantity, meaning it has both magnitude and direction.
For example, if an object moves in a circle, the distance traveled will be equal to the circumference of the circle, but the displacement will be zero, since the object returns to its initial position.
Another example is if an object moves back and forth along a straight line, the distance traveled will be twice the length of the line, but the displacement will be zero, since the object returns to its initial position.
In general, the distance traveled will always be greater than or equal to the displacement. This is because the distance traveled includes all of the path that the object takes, while the displacement only includes the change in the object's position.
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Answer:
Explained
Explanation:
In order to retain atmosphere a planet needs to have gravity. A gravity sufficient enough to create a dense atmosphere around it, so that it can retain heat coming from sun. Mars has shallow atmosphere as its gravity is only 40% of the Earth's gravity. Venus is somewhat similar to Earth but due to green house effect its temperature is very high. Atmosphere has a huge impact on the planets ability to sustain life. Presence of certain kind gases make the atmosphere poisnous for life. The atmosphere should be such that it allows water to remain in liquid form and maintain an optimum temperature suitable for life.
B. 2 cm/s2
C. 5 cm/s2
D. 6 cm/s2
The asteroid 234 Ida has a mass of about 4×1016 kg and an average radius of about 16 km. The acceleration due to gravity will be 1.04 cm/s². Hence, option A is correct.
The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity. M/s² is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on the earth's surface is 9.8 m/s².
The formula for the acceleration due to gravity is g=GM/r².
According to the question, the given values are :
Mass, M = 4 × 1016 kg or
M = 4 × 10¹⁶.
Radius, r = 16 km or,
r = 16000 meter.
G = 6.67 × 10⁻¹¹ Nm²/kg²
g = (6.67 × 10⁻¹¹ ) (4 × 10¹⁶) / 16000²
g = 0.0104 m/s² or,
g = 1.04 cm/s².
Hence, the acceleration due to gravity will be 1.04 m/s²
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Answer:
1 cm/s²
Explanation:
I just took the quiz
a) The large sphere has 3 times the mass of the small sphere
b) The final height at which small ball reach y = 4H
We must start this problem by calculating the speed with which the spheres reach the floor
As the spheres are released v₀ = 0
The two spheres arrive at the same speed to the floor.
The largest sphere clashes elastically so that with the floor it has a much higher mass, the sphere bounces with the same speed with which it arrived, the exit speed of the spheres
The big sphere goes up and the small one down, the two collide, let's form a system that contains the two spheres, let's use moment conservation
Let's call
Small sphere m₂ and
Large sphere m₁ and
Before crash
After the crash
The conservation of kinetic energy
Let's write the values
The solution to this system of equations is
The large sphere is labeled 1, we are asked for the mass so that = 0, let's clear the equation
The large sphere has to complete 3 times the mass of the sphere1 because it stops after the crash.
b) Let us calculate with the other equation the speed with which the sphere comes out2 (small)
In addition, we know that m₁ = 3 m₂
mt = 3m2 + m2
This is the rate of rising of sphere 2 (small. At the highest point, it zeroes velocity = 0
Thus
a) The large sphere has 3 times the mass of the small sphere
b) The final height at which small ball reach y = 4H
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Answer:
a) the large sphere has 3 times the mass of the small sphere
b) y = 4H
Explanation:
We must start this problem by calculating the speed with which the spheres reach the floor
vf² = vo² - 2g y
As the spheres are released v₀ = 0
vf² = - 2g H
vf = √ (2g H)
The two spheres arrive with the same speed to the floor.
The largest sphere clashes elastically so that with the floor it has a much higher mass, the sphere bounces with the same speed with which it arrived, the exit speed of the spheres
V₁₀ = √2gH
The big sphere goes up and the small one down, the two collide, let's form a system that contains the two spheres, let's use moment conservation
Let's call vh = √2gH
Small sphere m₂ and v₂o = - √2gH = -vh
Large sphere m₁ and v₁o = √ 2gh = vh
Before crash
p₀ = m₁ v₁₀ + m₂ v₂₀
After the crash
pf = m₁ v₁f + m₂ v₂f
po = pf
m₁ v₁₀ + m₂ v₂₀ = m₁ v₁f + m₂ v₂f
The conservation of kinetic energy
Ko = ½ m₁ v₁₀² + ½ m₂ v₂₀²
Kf = ½ m₁ v₁f² + ½ m₂ v₂f²
Ko = KF
½ m₁ v1₁₀² + ½ m₂ v₂₀² = ½ m₁ v₁f² + ½ m₂ v₂f²
Let's write the values
-m₁ vh + m₂ vh = m₁ v₁f + m₂ v₂f
m₁ vh² + m₂ vh² = m₁ v₁f² + m₂ v₂f²
The solution to this system of equations is
mt = m₁ + m₂
v1f = (m₁-m₂) / mt v₁₀ + 2m₂ / mt v₂
v₂f = 2m₁ /mt v₁₀ + (m₂-m₁) / mt v₂
The large sphere is labeled 1, we are asked for the mass so that v1f = 0, let's clear the equation
v₁f = (m₁-m₂) / mt v₁₀ + 2m₂ / mt v₂₀
0 = (m₁-m₂) / mt vh + 2 m₂ / mt (-vh)
(m₁-m₂) / mt vh = 2 m₂ / mt vh
(m₁-m₂) = 2m₂
m₁ = 3 m₂
The large sphere has to complete 3 times the mass of the sphere1 because it stops after the crash.
b) Let us calculate with the other equation the speed with which the sphere comes out2 (small)
v₂f = 2m₁ / mt v₁₀ + (m₂-m₁) / mt v₂₀
v₂f = 2 m₁ / mt vh + (m₂-m₁) mt (-vh)
In addition, we know that m₁ = 3 m₂
mt = 3m2 + m2
mt= 4m2
v₂f = 2 3m₂ / 4m₂ vh - (m₂-3m₂) 4m₂ vh
v₂f = 3/2 vh +1/2 vh
v₂f = 2 vh
v₂f = 2 √ 2gh
This is the rate of rise of sphere 2 (small. At the highest point its zero velocity vf = 0
V² = v₂f² - 2 g Y
0 = (2√2gh)² - 2gy
2gy = 4 (2gH)
y = 4H
Answer:
P = 1.99 10⁸ Pa
Explanation:
The definition of the bulk module is
B = - P / (ΔV / V)
The negative sign is included for which balk module is positive, P is the pressure and V that volume
They tell us that the variation in volume is 9.05%, that is
ΔV / V = 9.0Δ5 / 100 = 0.0905
P = - B DV / V
P = 2.2 10⁹ (0.0905)
P = 1.99 10⁸ Pa
Answer:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.
Explanation: