A Cliff divers at Acapulco jump into the sea from a cliff 33 m high. At the level of the sea, a rock sticks out a horizontal distance of 7.22m .the acceleration of gravity is 9.8 m/s . With what minimum horizontal velocity must the cliff divers leave the top of the cliff if they […]
water flows through a 2 in. opening in the side of a tank If the opening is 8 ft. Below the surface of the water. What volume would escape from the tank per minute ?
Single charged sodium ions are accelerated through a potential difference of 398 V. (a) What is the momentum acquired by such an ion? kg*m/s (b)What is the de Broglie wavelength? fm
A tennis player hits a ball hard and 0.40s later hears the echo from a wall.The speed of sound in air is 330m/sHow far away is the player from the wall?
Unit 2 Quiz Name:__________________ Date:__________________ Part I: Read each question carefully. Choose the correct answer (1 pt each). 1. Temperature is the measure of the total kinetic energy of all the molecules in a substance. True False 2. Jenny’s kitten, Mousse, has a mass of 3.3 kg. Jenny has a mass of 62.6 kg. What […]
if two vectors have magnitude of 5 and 12, respectively, and are at right angles to each other, what is their resultant
A car has an initial speed of u m/s. The car accelerates to a speed of 2u m/s in 12 seconds. The car travels at a constant speed of 2u m/s for 10 seconds. Assuming that the acceleration is contact, show that the total distance , in metres, traveled by the car is 3rd.
What are the conditions of projectile A. Throughout the flight B. Along horizontal C. Along vertical D. When vertical displacement is at maximum
A sphere s having mass of 50g and it’s radius s 2cm.calculate its density and conclude whether the body will sink or float…?
The total cross-sectional area of the load-bearing calcified portion of the two forearm bones (radius and ulna) is approximately 2.6 cm2. During a car crash, the forearm is slammed against the dashboard. The arm comes to rest from an initial speed of 80 km/h in 4.9 ms. If the arm has an effective mass of […]