As we go from one planet to another planet, how will the mass and weight of a body change?

Mass of any body is the quantity of matter contained in a given volume of the body. As we will go from one planet to another planet, the mass of a body i.e the content inside the body remains same. Hence the mass will remain constant. However as we have gone to the other planet ,so there…

A wave of frequency 500 Hz is travelling with a speed of 350 m/s. (a) What is the phase difference between two displacements at a certain point at times 1.0 ms apart? (b) what will be the smallest distance between two points which are 45º out of phase at an instant of time?

The given that can be listed is  frequency n = 500Hz speed v = 350m/s we can find wavelength λ  λ = v/n = 350/500 = 0.7m and time period T as T = 1/n = 1/500 = 0.002s = 2ms a) for a time difference of 1.0ms, phase difference ∆Φ = ?  for a phase…

Elastic and inelastic collision and their characteristics

Elastic collision : A collision in which both the momentum and kinetic energy of the body remains conserved. e.g. the collision between two metal balls. The basic characteristics of an elastic collision are ♦️Momentum is conserved.♦️Total energy is conserved.♦️Kinetic energy is conserved.♦️Forces involved in the interaction are of conservative nature.♦️Mechanical energy is not transformed into…

Distinguish between elasticity and plasticity

Elasticity If any body regains is original shape and size after removal of deforming force that property is called as elasticity The restoring forces that gets developed in the body are very strong and it is capable to bring the displaced molecules to their original positions, and hence helps the object in regaining the original…

Side effects of excessive use of mobile phones

Excessive use of mobile phones can have several side effects on both physical and mental health. Some of the common side effects include: 1. Eye strain and vision problems: Staring at the screen for long periods can lead to eye strain, dry eyes, blurred vision, and even nearsightedness. 2. Sleeping problems: The blue light emitted…

A girl stands 170 m away from a high wall and claps her hands at a steady rate so that each clap coincides with the echo of the one before. a) If she makes 60 claps in 1 minute, what value should be the speed of sound in air? b) Now, she moves to another location and finds that she should now make 45 claps in 1 minute to coincide with successive echoes. Calculate her distance for the new position from the wall.

After going through we can list some data as, distance d = 170 m To find a) speed v = ?               b) distance d= ? Solution – a)its given that girl makes 60 claps in one minute  hence she makes 1 clap in 1 sec  therefore we can say that …

An echo-sounder in a fishing boat receives an echo from a shoal of fish 0.45 s after it was sent. If the speed of sound in water is 1500 m/s, how deep is the shoal?

Going through the sums, we can list the given quantities as, speed v= 1500 m/s time in which the signal is recieved back after hitting the shoal, i.e time for going+time for coming back i.e 2t = 0.45 s  therefore t = 0.225s To find distance d = ? Solution –  velocity, distance and time can be…

A tuning fork of frequency 170 Hz produces sound waves of wavelength 2 m. Calculate speed of sound.

 We can list the given data as, frequency n = 170Hz wavelength λ = 2m To find speed v = ? Solution –  velocity , frequency and wavelength is connected by the formula  v = n x λ  v = 170 x 2  v = 340 m/s The speed of sound is 340m/s