# Physics

A Cliff divers at Acapulco jump into the sea from

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 o

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 throug

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?

objective question solved from various topics in physics

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, respec

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 a

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.

Projectile Motion

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 2

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…?

Physics :Compressional Stress

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 […]