Question 18 Consider the beam and weights shown. What approximate weight is needed at the arrow to balance the bar? Assume the beam has no mass ooo 124N 156 N 15.5 N 12.4 kg 10 m 4m isdick here to enlarge image 8m

5) Two neutron stars are separated by a distance of 2.98x10^(10)m. Both have a mass of 3.17x10^(30)kg and a radius of 253000m. They are initially at relative rest. a) What is the speed of both when the distance between them is half the initial value? in m/s b) What is the speed of both when they are about to collide? in m/s

A meteoroid is moving towards a planet. It has mass m = 0.18×109 kg and speed v1 = 3.8×107 m/s at distance R1 = 1.6×107 m from the center of the planet. The radius of the planet is R = 0.26×107 m. The mass of the planet is M = 10×1025 kg. There is no air around the planet. a)Enter an expression for the total energy E of the meteoroid at R, the surface of the planet, in terms of defined quantities and v, the meteoroid’s speed when it reaches the planet’s surface.  b)Enter an expression for v, the meteoroid’s speed at the planet’s surface, in terms of G, M, v1, R1, and R.  c)Calculate the value of v in meters per second.

Convert 8.2 from g/cm3 to SI units.

When describing the changes in energy as Felix falls, what is the system that is interacting and causing a change in potential energy? (a) Felix and the capsule he jumps from (b) Felix and the Earth (c) Felix (d) The Earth

Two stars in a binary system orbit around their center of mass. The centers of the two stars are 6.96x10¹¹ m apart. The larger of the two stars has a mass of 4.46x10³0 kg, and its center is 1.86x10¹¹ m from the system's center of mass. What is the mass of the smaller star?

Two stars in a binary system orbit around their center of mass. The centers of the two stars are 6.91x1011 m apart. The larger of the two stars has a mass of 4.17x1030 kg, and its center is 2.22x1011 m from the system's center of mass. What is the mass of the smaller star?

a. A binary system consists of star A with mass of 3.8 x 100 Kg and star B with mass of 3.2 x 1030 kg. Their centres are separated by 9.8 AU (1.5 x 10¹1m) Calculate how far the centre of mass of the system is from star A. b. What is the reduced mass of such system in part a? c. A point has coordinates (x,y,z) in cartesian coordinate system, use spherical coordinates as generalized coordinates to calculate dy d. Positions of two planets are given as (-4.00, 2.94,-0.10) AU and (6.41, 6.54,-0.37) AU. Find the distance between them? Attach File Browse Local Files Browse Content Collection

A small asteroid that has a mass of 150 kg is moving at 500 m/s when it is 950 km above the surface of the Moon. The radius of the Moon is 1.737E6 m and the mass of the Moon is 7.350E22 kg. a.How fast will the meteorite be traveling when it impacts the lunar surface if it is heading straight toward the center of the moon? b.The atmosphere of the Moon is negligible. How much work does the Moon do in stopping the asteroid?

Asteroid: An asteroid of mass 326 kg orbits the sun in a long-period orbit of 125 years. It is currently at its furthest distance from the sun: 7.46 x 10+12 m. It is moving at 284 m/s. When the asteroid makes its closest approach to the sun – in another 62 years – it will pass within 1.68 x 10+10 m of the sun. How fast will it be going?