A balloon is at a height of 81m and is ascending upwards with a velocity of 12m/s. A body of 2kg weight is dropped from it. If g=10m/s2, the body will reach the surface of the earth in how much time?

Motions in your arms, legs, hips, and neck are all related to the use of inclined planes.

According to the ideal gas law, increasing the volume of a closed reaction container decreases the thermal energy because the A) R is divided. B) temperature increases. C) collision frequency remains the same.

You have gathered information about which websites your classmates visit to research science questions. What type of graph would best represent this information? A. pie chart B. bar graph C. line graph D. scatter plot

A stream that is 3 wt% B and the 97 wt% C, and a stream that contains only A and B (5,300 kg/hr total), are fed to a column. Three product streams emerge: the overhead is 100% A. The bottom stream is 60 wt% B and 40 wt% C.

In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 40.0 km wide, and 250 m thick. What is the mass of this iceberg, given that the density of ice is 917 kg/m3?

A boat is traveling upstream in the positive direction of the x axis at 10 km/h with respect to the water of a river. The water is flowing at 7 km/h with respect to the ground. (a) What is the velocity of the boat with respect to the ground?

What are the standard units of length mass volume and temperature?

Approximately how long is a light-year? A. 9.5 billion km B. 95 billion km C. 9.5 trillion km D. 95 trillion km

A car that increases its speed from 20km/h to 100km/h undergoes what acceleration

When a wave crosses a boundary and changes speed and direction?