A plane is headed north with a velocity of 400 kmhr-¹ and a west wind is blowing at 70
kmhr-¹. Find the distance of the plane from
its base in 2 hours.

Scientists use laser range-finding to measure the distance to the moon with great accuracy. a brief laser pulse is fired at the moon, then the time interval is measured until the "echo" is seen by a telescope. a laser beam spreads out as it travels because it diffracts through a circular exit as it leaves the laser. in order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1.0 km in diameter. staying within this diameter is accomplished by using a special large-diameter laser. part a if λ = 540nm , what is the minimum diameter of the circular opening from which the laser beam emerges? the earth-moon distance is 384,000 km. express your answer to two significant figures and include the appropriate units.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr