An object of mass 12kg is held at a weight of 5m above the ground for 30s. Calculate the workdone during this period.

The reason sea breezes are usually from the sea toward the land during the day is that A. land is hotter than water. B. cool air high over the ocean flows downward. C. a high-pressure area is created high above the water. D.

Which types of galaxies tend to be made up of very old stars and contain very little gas and dust matter?

When a device is use in a circuit in which the voltage is 81v, the current following though the device is 3A what is the resistance of the device

The mass of an object at the surface of the earth of the same object at the distance of two Earth radii from the surface of the earth is?

What is the difference between a mechanical wave and an electromagnetic wave? O A mechanical wave travels through empty space, while an electromagnetic wave travels through matter.

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...

What type of ethic is life-centered and views humans as just one component life on Earth

Which formula describes acceleration? m/s^2 m/s s/m m2