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...