A car with weight of 7,947 newton is moving with 28.83 km/h. The driver applies the breaks to stop the car in 7.315
seconds. The magnitude of the force (in newton) needed to
stop the car is:

Keneila is attempting to ski down a 20 m high friction free hill for the first time. she has a speed 10 m/s at the top. what is her kinetic energy when she is a the bottom, 20 m ? (a)2500 j (b)9800 j (c)12300 j (d)3100j (e)15000j

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.