What are satellites?
Q: A SONAR system fixed in a submarine operates at a frequency 40.0 kHz. An enemy submarine moves towar...
A: Calculating the frequncy reflected by the enemey submarine:Note: This frequncy will not be recieved ...
Q: What are the circular spots of light seen on the ground beneath a tree on a sunny day?
A: The circular spots of light seen on the ground beneath a tree on a sunny day are the pinhole images...
Q: In the question above if q 1 has mass 0.2g and charge q 2 is 2.4x10 -9C. The separation r is 4.7cm,...
A: Write the expression for the electric field produced by the charge q2 at the place of q1 , which is ...
Q: What amount of heat must be supplied to 2.0 × 10-2 kg of nitrogen (at roomtemperature) to raise its ...
A: The expression for amount of heat is,
Q: Choose the BEST answer to the following: Your distance of your image behind a plane mirror is equal ...
A: The focal distance of plane mirror is
Q: Choose the BEST answer to the following: The red glow in the neon tube of an advertising sign is a r...
A: Neon signs are electric signs lighted by long luminous gas discharge tubes that contain rarefied neo...
Q: A refrigerator is to maintain eatables kept inside at 90C. If room temperature is 360C, calculate th...
A: Given:Temperature inside the refrigerator(T1)=90°C=363kRoom temperature(T2) =360°C=633k
Q: Differentiate between stress and strain.
A: Stress: - It is defined as the resistive force per unit area that rigid body exerts against an exter...
Q: Choose the BEST answer to the following: Interference is characteristic of (a) sound waves. (b) ligh...
A: Interference is the phenomenon in which two waves superpose to form a resultant wave or same, greate...