Physics, 30.07.2019 15:50 Xavier8247

Object a with a mass of 500 kilograms hits stationary object b with a mass of 920 kilograms. if the collision is elastic, what happens after the collision?

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Answer from: yjudon37

Both objects move away from the site of the collision, with speeds
and in directions such that the total kinetic energy and vector-momentum
of both of them are equal to the total kinetic energy and vector-momentum
that Object-A had before the collision.

Answer from: lashaydews12

Both objects will move

Explanation:

The collision is elastic, which means that both the total momentum and the total kinetic energy will be conserved after the collision. Therefore, we will have:

$m_A u_A = m_A v_A + m_B v_B\\\frac{1}{2}m_A u_A^2 = \frac{1}{2}m_A v_A^2 + \frac{1}{2}m_B v_B^2$

where the first equation represents the conservation of the total momentum, while the second equation represents the conservation of the kinetic energy, and

u_A is the velocity of object A before the collision

v_A is the velocity of object A after the collision

v_B is the velocity of object B after the collision

m_A = 500 kg, m_B=920 kg are the masses of the two objects.

Answer from: Quest

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm. the wire diameter is d = 0.9 mm. the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2) in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

Answer from: Quest

so easy. just google the electromagnetic waves and it’ll pop up.

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