Homework Questions Questions
A boy can hear sound having frequencies in the range 20Hz to 20000Hz. Calculate the longest wavelength, the boy can hear?|
A car tyre make contact with the ground on a rectangular surface area of 12cm x 18cm. if the car's mass is 1260kg and it's weight is 12600N,what pressure does the car exert on the ground
A charged insulator can be discharged by passing it just above a flame.explain how
A pendulum is made of metal wire.what happens to the period if it is used during very hot conditions
A Pilot needs to travel 200 km/h [E]. The wind is blowing at 65 km/h [N 15 degrees W]. wha air speed and direction does the pilot need to reach his goal?
A ship sails south a distance of 320 miles, then turns and sails northwest 190 miles. find the distance from home port and the direction in which the ship must sail to return.
Calculate the speed of a car moving a distance of 150km in 3 hours.
Can we have two coherent sources using two incandescent light bulbs? Give reason for your answer.
Draw a diagram showing how the image is produced in a compound microscope
Gases- how does the temperature of the walls of a container affect collisions?
How fast is a ball thrown?
Light and reflection
Measure the time takes to you to walk from your house to your school the distance is 7km.If you consider that your average speed is 4ms to the power -1. estimate the distance of the school from your house?
Numericals to show that displacement is either less than or equal to distance
PLACE A WOODEN SPOON AND A METAL SPOON IN THE FREEZER. WHICH WILL COOL FAST?
Scaler and vactor
Speed and velocity
The displacement of a flying object under the influence of gravity is called its
The school of a boy from his home in 1km to the east.when he reached back his home he says that he had travell?
What do you understand by motion of translation and rotation
What is used to laminate the core of transformers?
When equal volumes of two substances are mixed together, the sp. gravity of the mixture is 4. But when equal weight of the same substances are mixed together, the sp. gravity of the mixture is 3. Find the sp. gravities of the two substances?
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