A plane flies horizontally at an altitude h = 4 km with a horizontal speed of 540 km / h ; it launches , without speed relative to the plane , a bomb . The pilot intends to bombard an immobile target , ahead on the ground . To study the motion of the bomb , we consider the system ( XOy ) of origin 0 representing the position of the plane at the instant of launching of the bomb as shown in the adjacent figure . We neglect air resistance . Given g = 9.8 m / s ? 1 ) Determine the launching speed of the bomb .
2 ) Determine the parametric equations of motion of the bomb .
3 ) At what distance « d » from the target should the pilot launch the bomb ?
4 ) Determine the direction and the magnitude of the velocity vector of the bomb at the point of impact with the target
5 ) Determine the position of the plane at the instant of hitting the target .
6 ) Precise , with justification , the trajectory of the bomb with respect to the pilot

Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

For problems 1-3, consider a simple dc brush motor with a permanent magnet stator. with an an consider a simple dc brush motor with a permanent magnet ae supply voltage of 100 v, the no-load speed of the motor is 1000 rpm. this motor can provide a torque of 1.9 n-m at 800 rpm drawing a current of 2 a current are both zero at no load.) 1. with an armature supply voltage of 100 v, the motor is operated at 900 rpm. what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input? what is the energy efficiency of the motor? with an armature supply voltage of 100 v, the motor is operated at 1100 rpm (where it acts as a generator). what torque input is required? what mechanical power is required what current is generated? what is the electrical power generated? what is the energy efficiency of the motor acting as a generator? 2. with an armature supply voltage raised to 120 v, the motor is operated at 1000 rpm. what is the no-load speed? what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input what is the energy efficiency of the motor? 3.