Answer:
5.90000114e+7 m/s
Explanation:
Given values
M₁ = 1.8e+8 kg
M₂ = 2.4e+25 kg
M = M₁ + M₂ = 2.400000000000000018e+25 kg
G = 6.6743e-11 m³ kg⁻¹ sec⁻²
GM = 1.60183200000000001201374e+15 m³ sec⁻²
r₁ = 2.9e+7 m
v₁ = 5.9e+7 m/s
R = 2.2e+6 m
The total energy of the meteroid per unit mass at time t₁ is
E/M₁ = 0.5v₁² − GM/r₁ = 1.7404999447644137931034478615952e+15 m²/s²
At impact,
E/M₁ = 0.5v₂² − GM/R = 1.7404999447644137931034478615952e+15 m²/s²
v₂ = √[2(E/M₁ + GM/R)] = 5.9000011404572937396882314817886e+7 m/s
v₂ − v₁ ≈ 11.4 m/s
Answer:
80 Joules.
Explanation:
Given that a 20 kg sled stars at the top of a hill which is 10 m above the bottom and slides a distance of 50 m, ending at the bottom of the hill with a speed of 8 m/s. During the slide, the work done by gravity is about ?
The parameters given are:
Mass M = 20 kg
Height h = 10 m
Velocity V = 8 m/s
The workdone by gravity will be equal to the total energy
At the bottom of the hill, the total energy will be equal to the maximum kinetic energy.
Maximum K.E = 1/2mv^2
K.E = 1/2 × 20 × 8
K.E = 80J
Therefore, the workdone by the gravity is equal to 80 Joules.
Always, whether we notice it or not. It's a law of nature.
Answer:
5 km
0
Explanation:
The question says the truck travelled to and fro from the stone quarry.
When going to the stone quarry, the distance was 2.5 km to the east.
On returning, the distance back is also 2.5km
Therefore total distance travelled is 2.5km + 2.5km
= 5km
The displacement 8s dependent on what is the initial and also the final position. The initial and the final position are one and the same thing. Because the truck starts and goes back to the same position, the displacement is zero.
Answer:
The balanced condition for Wheat stones bridge is
Q
P
=
S
R
as is obvious from the given values.
No, current flows through galvanometer is zero.
Now, P and R are in series, so
Resistance,R
1
=P+R
=10+15=25Ω
Similarly, Q and S are in series, so
Resistance R
2
=R+S
=20+30=50Ω
Net resistance of the network as R
1
and R
2
are in parallel
i=
R
V
=
50
6×3
=0.36 A.
Explanation:
