How fast is a dropped object moving after it falls for 4 s?

Q: A flywheel with a radius of 0.500 m starts from rest and accelerates with a constant angular…

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Q: The Incredible Hulk, chased by the army, leaps with speed 16_m/s at a 57° angle above the horizontal…

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Q: A machine raises a load of 430 N through a height of 10 m in 5 sec. Calculate: 1. Energy spent by…

A: Force, F = 430 N Height, s = 10 m Time, t = 5 sec Energy, E = ?  Power, P = ?

Q: A sealed container isolated from its environment holds 0.735-kg of water at 13.5°C. A heater inside…

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Q: The graph shows the impedance as a function of frequency for a series RCL circuit. At what frequency…

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Q: A monochromatic ray of light passes from one medium into another medium with a larger index of…

A: Given: The first medium is rarer. The second medium is denser.

Q: 14. An object is swung around on a string in a vertical circle, while its speed is slowly increased.…

A: At the bottom of the vertical circle. Since at the bottom, tension is maximum.

Q: A water pump raises 50 litres of water through a height of 25m in 5 s. Calculate the power of the…

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Q: A technician was accidentally exposed to potassium-42 while doing some brain scans for possible…

A: Activity after 36 hours = 2 micro Ci half life = 12 hr time = 36 hr

Q: please do not copy answers from existing problems here and online. answer completely. A ring-shaped…

A: GIVEN: radius of conductor a= 2.50cm charge on conductor Q = +0.125nC distance from point P = 40cm…

Q: On a particular blender's STIR setting, the blades rotate with angular velocity 2100 rev/min. On…

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Q: A slender rod is 80.0 cm long and has mass 0.270 kg. A small 0.0200-kg sphere is welded to one end…

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Q: Single-slit diffraction maximum. Light of wavelength 750 nm passes through a slit 1.0x10-³mm wide.…

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Q: 1-A light ray moving through CR39 at angle 49° angle exits into another medium at angle of 41°. What…

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Q: HOW DO YOU CORRECT CASES OF FARSIGHTEDNESS AND NEARSIGHTEDNESS USING LENS? BRIEFLY EXPLAIN THE…

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Q: Part A What is the magnitude of the electric force on one proton due to the other proton? Express…

A: Distance of separation of two protons, r=7 fm The charge of a proton, q=1.60×10-19 C The mass of a…

Q: The value of surface tension is more at O 50 oC 80 OF 103 OF 300 oC O No correct answer

A: The value of surface tension is more at 80 oF.

Q: 2. A ball is thrown vertically upward from the ground with a speed of 20 m/s. For this problem only,…

A: An item or particle that is thrown with respect to  the surface of the Earth and proceed through a…

Q: 1. Electric field lines are drawn (a) from positive charges to negative charges (b) from negative…

A: Positive charge behaves as the source for electric field and negative charge behaves as sink for…

Q: *21. ssm Three deer, A, B, and C, are grazing in a field. Deer B is located 62 m from deer A at an…

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Q: Virginia is a 516-m-long steel arch. How much will its length change between temperature extremes…

A: Initial length = l = 516 m Initial temperature = t1= - 17 degrees Final temperature = t2= 31 degrees

Q: what is the net charge of 10 gm of water after removing 1% of its electrons?

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Q: How is the temperature of an object related to the amount of heat it absorbs or gives off? We take…

A: We have to find relation between change in temperature and heat absorbed or released. Given, 1…

Q: WHAT ARE THE SOURCES OF MAGNETIC FIELD?

A: Sources of magnetic field are :  (i) Electromagnet. (ii) Permanent magnet. (iii) Current - carrying…

Q: A climber who is 75 kgs in mass reaches the peak of a mountain. If the mutual attraction between the…

A: Given: The mass of the climber is 75 kg. The gravitational force between the climber and the earth…

Q: Calculate the wavelength at 32m/s of a frequency of a traveling of 6 Hz.

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Q: 2. A vector d has a magnitude 2.5 m and points north. What are the magnitudes and directions of the…

A: Hi, as this problem contains multiple sub-parts, hence the first three sub-parts will be solved for…

Q: hnny comes across a river that is 252 meters wide. He sees at the water flows eastward with a…

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Q: 9m 5.577428 A lunar excursion module (LEM) weights 102.7826 slug, on earth where g = 31.9882 ft/s².…

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Q: The figure below shows a metal bar moving to the right along conducting rails in uniform B- field…

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Q: A truck starts from rest and moves at a constant acceleration of 5 m/s. The speed of the truck in 4s…

A: GIVEN: Initial speed of truck u =0 m/s  acceleration of truck a = 5 m/s2 time t = 4sec.  find: speed…

Q: 15- Kidney tubules regulate water balance. true O false

A: Your kedneys have three main purposes that influence the rest of the body. These three roles are 1.…

Q: A 1500-kg car makes a horizontal turn 230m in radius at a velocity of 80 km/hr. (a) How much…

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Q: 1. Which of the following is necessarily true regarding the buoyant force exerted by air when an…

A: Answer (Q-1) - B. The buoyant force exerted by air is negligible compared to the weight of the…

Q: 7. If we know an object is moving at constant velocity, then we can be certain... the net force…

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Q: Consider the so-called "2-second rule" that is used as a recommendation when teaching safe driving…

A: Option (c) is correct choice. The amount of time to safely pass a vehicle that stops suddenly in…

Q: A 108-g cube of ice at 0°C is dropped into 1.0 kg of water that was originally at 71°C. What is the…

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Q: You can hear the sound from a person talking on your right in both ears because (A) sound diffracts…

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Q: Iron filings sprinkled around bar magnets are affected by the magnetic field of the bar magnets,…

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Q: When the anchor angle equals to 120, the tension in each arm of the anchor is:   Question 10…

A: Equilibrium of forces

Q: A machine raises a load of 720 N through a height of 12 m in 5 sec. Calculate: 1. Energy spent by…

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Q: Find the momentum of a bullet of 40 kg when it is fired from a gum with a velocity of 124 m/s.

A: Given data:   Mass (m) = 40 kg Velocity (v) = 124 m/s Required: The momentum (P)

Q: Given that both f(x) and g(B) are odd functions and f(x) x g(x) = v(x). Check whether v(x) is an…

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Q: A force of 40 Newtons is applied to an object at an angle of 37 degrees from the horizon, displacing…

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Q: *19. mmh The drawing shows sodium and chloride ions positioned at the corners of a cube that is part…

A: Write the expression for the tangent of angle θ in the triangle. Here, a is the height (distance…

Q: A machine raises a load of 410 N through a height of 12 m in 2 sec. Calculate: 1. Energy spent by…

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Q: A golf ball strikes a hard, smooth floor at an angle of 29.1° and, as the drawing shows, rebounds at…

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Q: The angular velocity of a gear is defined by w = (12 - 3t²) rad/s, where t is in seconds. Determine:…

A: Given:- Angular velocity of the gear is ω=(12-3t2) rad/s   Required:- We need to calculate the…

Q: 6. A rocket ship in free space moves with constant acceleration equal to 9.8 m/s² (a) If it starts…

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Q: A 1300 kg car moving on a horizontal surface has speed v= 77 mile/h when it strikes a horizontal…

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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –