Physics A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height? 5.41 sec 3.44 sec 2.87 sec 4.65 sec 5.41 sec 3.44 sec 2.87 sec 4.65 sec ANSWER DOWNLOAD EXAMIANS APP
Physics If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will Fall in front of him Fall into his hand None of these Fall behind him Fall in front of him Fall into his hand None of these Fall behind him ANSWER DOWNLOAD EXAMIANS APP
Physics If the length of a simple pendulum is halved then its period of oscillation is Decreased by a factor 2 Halved Increased by a factor 2 Doubled Decreased by a factor 2 Halved Increased by a factor 2 Doubled ANSWER DOWNLOAD EXAMIANS APP
Physics What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space? 21 km/sec 35 km/sec 18 km/sec 11.2 km/sec 21 km/sec 35 km/sec 18 km/sec 11.2 km/sec ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following is the value of one nanometer? 10-7 cm 10-6 cm 10-4 cm 10-3 cm 10-7 cm 10-6 cm 10-4 cm 10-3 cm ANSWER DOWNLOAD EXAMIANS APP
Physics A drop of liquid assumes spherical shape because: A sphere has the least surface area for a given volume A sphere has the largest surface area for a given volume Inter molecular forces are weak in liquids Intermolecular forces are strong in liquids A sphere has the least surface area for a given volume A sphere has the largest surface area for a given volume Inter molecular forces are weak in liquids Intermolecular forces are strong in liquids ANSWER DOWNLOAD EXAMIANS APP
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