A deciliter is 1/10 of a liter, so 82 deciliters is 8.2 liters<span>.</span>
Answer:
95.9°
Explanation:
The diagram illustrating the action of the two forces on the object is given in the attached photo.
Using sine rule a/SineA = b/SineB, we can obtain the value of B° as shown in the attached photo as follow:
a/SineA = b/SineB,
83/Sine52 = 56/SineB
Cross multiply to express in linear form
83 x SineB = 56 x Sine52
Divide both side by 83
SineB = (56 x Sine52)/83
SineB = 0.5317
B = Sine^-1(0.5317)
B = 32.1°
Now, we can obtain the angle θ, between the two forces as shown in the attached photo as follow:
52° + B° + θ = 180° ( sum of angles in a triangle)
52° + 32.1° + θ = 180°
Collect like terms
θ = 180° - 52° - 32.1°
θ = 95.9°
Therefore, the angle between the two forces is 95.9°
(a) The momentum of a moving object is given by:
where m is the mass of the object and v is its speed. In this problem, the mass of the elephant is and its speed is , therefore its momentum is
(b) We can use the same formula to calculate the momentum of the tranquilizer dart, whose mass is and whose speed is :
we see that the elephant's momentum is much larger than the momentum of the dart.
(c) Again, using the same formula, the mass of the hunter is , his speed is , therefore his momentum is
Answer:
(b) Both are the same
Explanation:
When work is done to change a position or a state of motion, then the potential and kinetic energy are created. Then the energy gets transferred to an object. Its means the work is done.
The work done to change a position of an object is called potential energy while the work done to change a state of motion of an object is called kinetic energy.
We know that the total energy of a system remains constant. It is called the law of conservation of energy.
So, the work done is equal to the amount of PE or KE created. Hence, the correct option is (b).
Answer:
Explanation:
Frequency is given by
Let the initial frequency be denoted by
When M is 2M then
Therefore, the final frequency is