A force F directed upwards is applied on an object resting on a flat surface. The object then moved to the right. Which of the following is TRUE about the upward force? a. F is gravitational force b. F caused the displacement of the object c. F does work on the object d. F is a conservative force e. Only the 1st and 3rd options f. Only the 2nd and 4th options g. None of the above

Q: In the figure, one end of a uniform beam of weight 130 N is hinged to a wall; the other end is…

A: Given that: W=130 Nθ=31°

Q: Find the potential energy of 2.4 kg mass kept at height of 7.2 m. Take g = 10 m/s²

A: Given Mass of the object = m = 2.4 kg Height = h = 7.2 m g = acceleration due to gravity = 10 m/s2…

Q: he speed of ultrasound in human body is 1540 m/s. A procedure is performed with a frequenc f 2 MHz…

A: Given:v=1540 m/sf=2 MHzvh=8 cm/s or 0.08 m/s

Q: The ratio of the distribution of the atoms in the sapphire laser that produces A beam of light of…

A:

Q: Find the time taken 38 w bulb to consume 2100 J of energy?

A: Introduction :  In this question we are provided with value of power and energy consumed . with…

Q: ) Two figure skaters, one weighing 625 N and the other 725 N, push off against each other on…

A:

Q: Two ships leave at the same port at the same time. The first ship travels at the speed of 16 knots…

A:

Q: . Find their average mass?

A: Given data;  Masses of five marbels are;   50g, 55g, 60g and 70g.  Find their average mass ?

Q: Using ray diagram, draw the image formation by a CONVEX LENS when the object is found: 1. Beyond 2F'…

A: Rules for image formation: 1. A ray parallel to the principal axis after reflection from the lens…

Q: The largest possible distance to achieve the line of sight for a system in which the height of the…

A: in this  question  we use simple pythagoras theory for getting ans.

Q: Kinetic energy Mass of car = Find the velocity? 625 J 50 kg

A:

Q: 1) A UFO is heading due west at a speed of 800 kph. The wind is blowing due south at 95 kph. Find…

A:

Q: The force systems shown consists of the couple C and four forces. If the resultant of the system is…

A: GIVEN: from digrame Fxi= 400N Fyi= 100N  Resultant force on system = 75000 N-mm

Q: 2.) A hockey puck struck at ice level just clears the top of a glass wall that is 2.80 m high. The…

A: Projectile motion

Q: #11 Electron Volt Measure In #10, recalling that the proton mass is 1.67 × 10-27 kg, what is the…

A:

Q: What is the relationship of the hanging mass to the acceleration of the cart? to time of travel?

A: Acceleration  It states that the ratio of velocity to the time of the object Tension Tension is a…

Q: A 25.0-g arrow traveling at 60.0 m/s hits a target and penetrates 15.0 cm before coming to rest. The…

A: Given    A 25.0-g arrow traveling at 60.0 m/s hits a target and penetrates 15.0 cm before coming to…

Q: A 2.3-kg cart is rolling along a frictionless, horizontal track towards a 1.5-kg cart that is held…

A:

Q: Find the potential energy of 2.4 kg mass kept at height of 7.2 m. Take g = 10 m/s²

A: Introduction :  In this question we are provided with value of mass , height and acceleration due to…

Q: The data shows the voltage reading during charging across the 10-µF capacitor in a circuit with 6-MΩ…

A: Given resistance(R)=6 x 106 ohms Capacitance (C)=10 x 10-6 F Required time constant (t)=?

Q: Suppose we want to calculate the moment of inertia of a 55 kg skater, relative to a vertical axis…

A:

Q: 1. A basketball (m = 625 g) bounces up a horizontal floor. The speeds of the ball before and after…

A:

Q: Q18) A sample of bone tissue with a density of (1.8 g/cm3). Calculate the speed of ultrasound that…

A: Given : Density = 1.8 g/cm3 =1.8×10-310-2×3= 1800 kg/m3 Acoustic Impedance = 7.38*106 kg.m-2s-1

Q: Q1/ Determine reactions in A and tension in cable as shown in figure?

A:

Q: A radar wave that reaches the target in a time of 2 x 10-4 seconds, the corresponding radar range…

A: Given data The time interval is given as t = 2 x 10-4 s.   As we know that the speed of the wave…

Q: A rod 12.0 cm long is uniformly charged and has a total charge of -23.0 µC. Determine the magnitude…

A: Write the given data. L=12 cmQ=-23 μCr=32 cm

Q: A 8.2-kg projectile is fired with a speed of + 260 m/s to the right. With what velocity does the…

A: Given:mass of projectile, m=8.2 kgspeed of projectile, v=260 m/smass of cannon, M=940 kg

Q: A convex mirror of focal length f = -10 cm has an object placed 5 cm from it. Draw a ray diagram of…

A: Given  Focal length , f = -10 cm  Object distance , u = -5 cm  Using mirror formula -  1/f= 1/v +…

Q: 5. While 40 joules (J) of work are done on a gas, the internal energy goes down by 150 J. What was…

A:

Q: A 1.5 Hz continuous wave travels on a Slinky. If the wavelength is 2 m, what is the speed of waves…

A:

Q: 3. A series RLC has values 12 2 and 3 for Xc and X₁, respectively, at some frequency. If the…

A: given resonance frequency ω0 =9*104 rad/s capacitive impedance χc=12 Ω indictive impedance χL=3Ω…

Q: CONNECTING A TRANSMITTER WITH AN IMPEDANCE ANTENNA (ZR=300 OHMS) BY A TRANSMISSION LİNE WITH ITS…

A:

Q: THE CUTTING WAVELENGTH IN A PERPENDICULAR METAL WAVEGUIDE IS THE MAGNETIC FIELD THAT FILLS THE AIR…

A: Write the expression of cutting wavelength. λc=2am   Here, for dominate mode: m=1

Q: The leaning tower of Pisa is 56 m tall. Supposedly Galileo investigated the behavior of falling…

A:

Q: A certain radioactive material decays exponentially. The percent, P, of the material left after…

A: Given:-  A certain radioactive material decays exponentially. The percent, P, of the material left…

Q: Radio station operating at kHz Equivalent to a dipole of half- wavelength is

A: Expression of wavelength: λ=cf Substitute the values. λ=300000000900×1000=333.33 m

Q: Four identical charged particles (q = +13.0 µC) are located on the corners of a rectangle as shown…

A:

Q: A space traveler takes off from Earth and moves at speed 0.9700c toward the star Vega, which is…

A: in this question  we use simple space motion equation  and get answer.

Q: What three criteria control the rate of evaporation of water into the air space above it? The water…

A: Evaporation is the process by which a liquid turns into a gas. Liquids changes into vapour by the…

Q: A person wearingg a safety belt can withstand a acceleration of -300m/s2. What is the safe stopping…

A: Required Safest stopping distance

Q: You've been hired as a technical consultant to help improve the design of motion detectors used for…

A:

Q: Calculate the speed of a ship that travels a distance of 935nm in 5 days and 105 minutes. What is…

A: The distance covered by the ship in time T=5 days 105 minutes, is D=935 nm

Q: Which of the following will reach the maximum range? a. A golf ball is hit at an angle of 90° above…

A:

Q: 5. A 210-N mass is suspended from a horizontal beam by two cables that make angles of 29° and 53°…

A:

Q: The speed of transmission of sound waves is ○ Water > Air > Snow O Water > Snow > Air in the air in…

A: Speed of transmission of sound waves depends upon the elasticity and the density of the medium.…

Q: Find the time taken 38 w bulb to consume 2100 J of energy?

A: Given that- Bulb power(p)=38W Energy (E)=2100J To determine that- Find the time taken?

Q: 7:55 Status Exam Unit 1 Exam 40 mL 30 ml 20 mL 10 ml A. 10 mL B. 20 mL 30 mL These graduated…

A: Given  Both cylinders are of same size and contain same amount of water .  Volume of water in left…

Q: n initially stationary box of sand is to be pulled across a floor by means of a cable in which the…

A:

Q: Find the acceleration Initial velocity=7 m/s Final velocity=7.5 m/s Time 3 s

A: Given data: Initial velocity (u) = 7 m/s Final velocity (v) = 7.5 m/s Time (t) = 3 s Required:…

Q: Find the potential energy of 2.4 kg mass kept at height of 7.2 m. Take g = 10 m/s²

A: