For a spacecraft going from the earth toward the sun, at what point will the gravitational forces due to the sun and the Earth cancel? [Earth's mass: me = 5.98 × 1024 kg sun's mass: ms = 1.99 × 1030 kg Earth-sun distance: r = 1.50 × 1011 m]
What will be an ideal response?
2.60 × 108 m from Earth
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In the diagram below, draw the transition that would emit a photon with the shortest wavelength
What will be an ideal response?
A free electron and a free proton are released in identical electric fields. Compare the magnitudes of their accelerations
1.It is millions of times greater for the electron. 2.It is thousands of times greater for the electron. 3.They are equal. 4.It is thousands of times smaller for the electron. 5.It is millions of times smaller for the electron.
A part for a land-based gas-turbine made of Haynes 25 must carry a tensile stress of 140 MPa (20 ksi). For a design lifetime of 10 years, what is the allowable temperature for this part, based only upon high-temperature creep rupture?
What will be an ideal response?
Newton's Second Law in 1 Dimension: A 450-kg sports car accelerates from rest to 100 km/h in 4.80 s. What magnitude force does a 68.0 kg passenger experience during the acceleration?
A. 394 N B. 82.0 N C. 342 N D. 311 N