A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train's acceleration be described?

What kind of relationship does a human have with the bacteria that lives in her/his digestive tract? mostly mutualistic mostly commensalistic mostly parasitic none of the above

Which example shows electrical energy being transformed into heat energy?

If the earth makes one orbit around the sun what is it called

Suppose the conducting wire (with resistance R) was replace with one of the same material but has its dimension doubled (the length and the radius having twice their original value.

A transverse sinusoidal wave on a string is moving in the - x-direction. Its speed is 30.0 m/s, and its period is 16.0 ms. At t = 0, a colored mark on the string at x = 0 has a vertical position of 2.00 cm and is moving down with a speed of 1.50 m/s.

Mass affects/does not affect the conservation of energy?

if 20N of unbalanced force is applied to an object and it accelerates 4m/s/s, then what was the mass of the object?

When a star is moving away from us, the observed frequencies of light are lower than the actual frequencies. this illustration of the doppler effect is called?

A pressure difference of 6.00 x 104 Pa is required to maintain a volume flow rate of 0.400 m3 / s for a viscous fluid flowing through a section of cylindrical pipe that has a radius 0.330 m.

The moon's gravity is one-sixth that of the earth. What is the period of a 0.25m long pendulum on the moon?