) What is luminescence? Briefly discuss the mechanism of LED with a neat sketch.
Q: A woman has a weight of 131 lb. Calculate the following. (a) her weight in newtons N (b) her mass…
A: The mass of women is 131 lb. (a) The conversion of unit lb to kg is, 131 lb×1 kg2.205 lb=59.4 kg…
Q: Q2. In Figure Q2, the 55 kg crate is at rest and the spring is initially unstretched. Knowing the…
A: Given Mass of the crate, m=55kg Spring constant, k=2kN/m Kinetic friction between the plane and the…
Q: An applied force of 87.4 N is used to accelerate an object to the right across a frictional surface.…
A: Given: W=43.5 N f=19 N
Q: To lift a patient, four nurses grip the sheet on which the patient is lying and lift upward. If each…
A:
Q: Eric has a mass of 45.99 kg. He is standing on a scale in an elevator that is accelerating downward…
A: We are given mass of Eric. We are given that he is standing on a scale in elevator. The elevator is…
Q: An astronaut applies a force of 14,000 N to an asteroid, and it accelerates at 4.00 m/s2 . What is…
A: according to Newtons second law, F=ma
Q: What is the force of friction between a block of ice that weighs 950 N and the ground if μ = 0.12?
A:
Q: If you can push with 300 N of force and the coefficient of friction is 0.5, what is the largest mass…
A: Given Data:- Applied force is F=300 N Coefficient of friction is μ=0.5 Required:- Largest mass…
Q: The mass of a blue whale, 190000 kg. ____ x 10 ^_____ kg
A:
Q: Which of the following is a unit of weight density? N/m3 kg/m3 N/m2 lbs/m2
A: Required: The unit of weight density
Q: What will be the weight of a boy of mass
A: Given; Body having mass= 5kg is 50 NFind weight of a boy having mass 50 kg a. kgf b. N
Q: A young South African girl has a mass of 40.0 kg. (a) What is her weight in newtons? (b) If she came…
A: Mass of South African girl- m=40.0 kg g=9.80 N/kg 1 kg= 2.2 lb
Q: The mass of an airplane is 4412 kg. If the airplane can make 434393 N of force forward and the air…
A: Mass , M = 4412 kg Forward force , F = 434393 N backward force , F = 380955 N To find = Acceleration
Q: Compute the vertical and horizontal components of F for the given values of F and angle. The angle…
A:
Q: A truck weighing 1,379 N moving uniformly along a horizontal path experiences a friction force of…
A: Solution: Given that A truck weighing 1379 N uniformly along a horizontal path friction force of…
Q: The drag force on a boat varies jointly as the wetted surface area and the square of the velocity of…
A: Given, The drag force on a boat varies jointly as the wetted surface area and the square of the…
Q: How much force is needed to push box (20kg) up an inclined plane (30 degrees from the horizontal)…
A:
Q: American astronauts brought a trunk of instruments on their trip to the Moon. The mass of the trunk…
A: Given: Here we have a trunk which is taken from earth to the moon and the mass of the trunk on…
Q: Compute the standard weight of a 5.0 kg mass
A:
Q: Density means that an object has more weight than another object of equal size O True O False
A: Density is the ration of the mass of an object and its volume, If M is the mass, V is the volume of…
Q: Forces of 146.2 N and 170.0 N act on an object. The angle between the forces is 41.6 degrees. Find…
A:
Q: The mileage for a motorcycle with a fuel-tank capacity of 18 L is 32 mi/gal. If the average speed…
A: volume of fuel = 18 L mileage = 32 migalaverage speed during the trip = 36 mihr
Q: Trailer truck has a mas of 4 metric tons and is traveling at 75 km/h. The driver then applies the…
A: Given, m = 4000 kg v = 75 km/h = 20.83 m/s t = 6 sec According to Newton's first equation of…
Q: What will be the weight of a boy of mass
A: Given; Weight of a body mass; ⇒2 kg=20NWhat will be the weight of a boy of mass 42 kg ?
Q: You have two ways of driving from Beaverton to Arens. You can drive the scenic route or take the…
A:
Q: The Antarctic expedition drives their snowmobiles 185 miles south from their camp. Then they turn…
A:
Q: A body with a mass of 100kg is pulled towards the center of the moon with a gravitational…
A: mass (m) = 100 kg gravitational acceleration = 3 less than half the earth's gravitational…
Q: A 6.09 kg box is pulled to the right with a force of 68.0 N. If the force of friction is 37.6 N,…
A:
Q: bject is 700 N . Find the mass of the objec
A: We know that the weight of the object is defined as the product of the mass and the acceleration of…
Q: Forces of 3 pounds and 11 pounds act on each other with an angle of 165°. The magnitude of the…
A:
Q: A block of weight 20 kg is to be lifted to a height of 2.1 m. a) what is the force required to lift…
A: Answer: Given data, Mass of block (m)=20 kg Height to lift (h)=2.1m
Q: A block slides at constant speed down the incline (see Figure 1.8) (A) How large is the friction…
A:
Q: A 5.4 kg ball with a diameter of 11 cm is dropped form an airplane at an altitude of 9 km above the…
A: Given: Mass of ball m = 5.4 kg Diameter of ball d = 11 cm = 0.11 m Altitude from where the ball is…
Q: Fnorm (normal force) = __________ N Ffrict (force of friction) = __________ N m (mass) = _________…
A: Given value--- Fgrav = 420 N. coefficient of friction force = 0.2. angle = 30 degree. We have to…
Q: If a mass of 4.01 kg object is attached to a string. If the force of tension in the string is 51 N…
A:
Q: Ariel's motorboat can cover 21 miles upstream in 3 hours. He travels 22 miles downstream in 2 hours.…
A:
Q: Weight of a body mass 6.0 kg is 60 N. What will be the weight of a boy of mass 65 kg. (a) kgf (b) N
A:
Q: A coin is resting on the surface of a closed book. As you slowly open the cover, the coin remains in…
A: The angle of repose is the maximum angle at which any object remains stable. It's the threshold…
Q: What will be the weight of a boy of mass
A: Given data; Weight of a body mass 7.0 kg=70 N Whta will be the weight of a boy of mass 70 kg a.…
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