An engineer wants a 4000kg helicopter to fly horizontally (neither gaining nor losing altitude) and increase speed at a rate of 2.6m/s2 despite experiencing a 1000N drag. How many forces are acting on the helicopter?
Are all the forces on the helicopter balanced?
What is the magnitude of the net force on the helicopter?
What is the strength of the horizontal thrust component?
What is the strength of the thrust?
At what angle, θ, does the helicopter need to tilt?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank