42, Children in stage 3 use what to try to solve the balance beam problem?     Distance from fulcrum     Number of weights     Both weight and distance from fulcrum     Both weight and distance from fulcrum, unless they are different

Q: Two objects, both with a mass of 1.87 kg are sliding across a horizontal, frictionless surface…

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Q: Define calorimetry and describe the two commonly used calorimeters.

A: Calorimetry is a branch of science concerned with determining a body's state in terms of thermal…

Q: A 0.5 A current pass through the 500 turns, 40 cm long solenoid. Calculate the magnetizing force…

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Q: A baseball player with a mass of 72kg slides into third base.  The force of kinetic friction between…

A: Write the given values with the suitable variables. m=72 kgf=582 Nv=0 m/st=0.72 s Here, m is the…

Q: 3. How much energy is released in a nuclear reaction if 4.37 x 10^25 kg of mass is converted to…

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Q: Give a physical explanation of why the magnification factor is nearly equal to 1 for small values of…

A: The Dynamic Magnification Factor is computed as the ratio of the maximum dynamic deflection to the…

Q: A circular coil of radius r carries a current I. If the same coil is now changed into a square loop…

A: Given, Radius of the circular coil, r carries current, I

Q: Two waves traveling in opposite directions result in a standing wave. If the function of each (4Cm)…

A: Displacement of individual wave particle (A) = 4cm

Q: (c) As shown in Figure 3, there are 2 non-conducting rings each with uniform charge q1 and 92. Both…

A: The electric field due to positive charge is away from it and due to negative one is towards it .…

Q: The ideal condition of AM is when the modulation index is equal to one hundred. True O False The…

A: Amplitude Modulation is a commonly used transmission technique, by which the signal containing…

Q: e speed of light in material rad ed Cherenkov light. Find the m ule that an electron must have

A: from the definition of refractibe index,n=cvv=cn=3×1081.33=2.25×108m/s.Now, E=12mv2…

Q: 1. Lita is taking her portable TV to the boarding house. She finds a cubical box which has a volume…

A: Volume of a cuboid = L×B×H L= length = 0.45m B= 0.1m H= 0.3 m

Q: Based on the same question, (Blue monochromatic light is used to shine on the Potassium metal…

A: The energy of blue monochromatic light is 2.645 eV. a) Write the expression for the kinetic energy…

Q: A car whose wheels are 30 cm in radius is travelling with a constant velocity of 110 kph. If it is…

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Q: Question. A cyclist and bike have a total mass of 5 Kg and moving with a speed of 10 m/s. Calculate…

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Q: Find the value of momentum

A: Given data : Mass=m Velocity=V   Required : Momentum

Q: Consider a 1 mole of an ideal gas at 25.00 oC. This gas is allowed to expand reversibly and…

A: We have an ideal gas of n=1 mole at a temperature T=25oC=298 K which expands from an initial volume…

Q: A candle 10 cm high is placed 25 cm in front of a plane mirror. Draw a ray diagram to show how the…

A: Given data: The height of candle is h=10 cm. The distance of candle from mirror is u=25 cm.

Q: 7- A homogeneous wire of mass (300 g) and length (6 m) The rope passes over a pulley and a weight of…

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Q: A person who is 35 ft east of you runs north at 16 ft/s. At what angle north of east would you throw…

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Q: a) A parallel plate capacitor has a dielectric with dielectric constant, k = 5.5. The plates are…

A: Given: The dielectric constant is 5.5. The separation of the plates is 4 mm. The area of the plate…

Q: Find the value of mass if density=1200 kg/m3 Volume=0.002 m3

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Q: A 0.25-mF capacitor is connected to a 400-V battery. Find the charge on the capacitor. Make a…

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Q: A rectangular brass plate has a dimension of 50 cm x 30 cm at 10oC. At what temperature should it be…

A: Solution: Given that rectangular brass plate has a dimension of 50 cm x 30 cm T1 = 10 C increase its…

Q: What indicate the precision of the systolic pressure The onset of K sounds indicate systolic…

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Q: 2. Two horsepower is used to lift a 150 kg concrete block up the highest floor of a building. What…

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Q: Consider a beam of electrons that moves from the electron gun towards the screen of a cathode ray…

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Q: What quantity is defined as the rate of work done per unit charge? Electric potential Electrostatic…

A: To define  the quantity associated with “rate of work done per unit charge”.

Q: Prove that the distance traveled by a body falling freely during n second of its motion is equal to…

A: First we find the displacement in nth second and then we find the displacement in (n-1)th second…

Q: Two 2.0cm × 2.0cm metal electrodes are spaced 1.4 mm apart and connected by wires to the terminals…

A: distance between the electrode, d = 1.4 mm potential difference between electrodes = 9.0 V

Q: C. Derive the formula for each quantity Find the other angle and sides of the following right…

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Q: 30. A metal block which measures 25 cm x 10 cm x 0.05 m has a mass of 13.5 kg. Find its density in…

A: Given  dimensions of block=25cm x 10cm x 5 cm mass=13.5 kg

Q: A 50.0-gal steel (a = 12x 10-6/C°) container is completely filled with CCI4 (B = 1.18×10 ³C°-1) at…

A: Solution: Given that for steel asteel = 12 x 10-6 °C-1 for CCl4 b =1.18x 10–3 °C–1

Q: ) In a perfectly elastic collision, momentum and kinetic energy of both colliding objects: a.…

A: In elastic collision momentum & kinetic energy both are conserved.  So both momentum &…

Q: 1. A woman 1.60 m tall stands in front of a vertical plane mirror. What is the minimum height of the…

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Q: Particle A with a mass 0.02 kg is moving due east at a speed 2.0 m/s. Particle B with a mass 0.03 kg…

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Q: Which of the following is true about a practical battery? O If the battery is absorbing power, its…

A: The voltage across terminals of battery is given as V= E- Ir ,where I is the current in the circuit,…

Q: An iceberg (sg = 0.917) floats in the ocean (sg = 1.025). What percent of the volume of the iceberg…

A: Given, Specific gravity of iceberg, SGiceberg = 0.917 specific gravity of ocean, SGocean = 1.025

Q: Using the sinusoidal wave to the right answer questions 1-3 1. What is the amplitude? a. 0.5 m y (m)…

A: Solution 1 Introduction :- Here we are given with a sinusoidal wave graph. We need to find the…

Q: 17.26 · In an effort to stay awake for an all-night study session, a student makes a cup of coffee…

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Q: 3. A crate of mass 10 kg is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling…

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Q: (6%) Problem 10: The unified atomic mass unit, denoted u, is defined to belu-1.6605 x 10 kg. It can…

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Q: A candle is placed at a distance of 30.0 cm from a converging lens having a strength of 12.5 D.…

A: Given: The distance of the object from the lens is 30 cm. The power of the converging lens is 12.5…

Q: 600g of ice at -8°C is put inside a calorimeter filled with 4000 g water initially at 20 °C. What is…

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Q: [Item2B] Do as indicated and answer the questions the follow. (kindly provide complete and full…

A: Force brings about motion and changes in it. The net force and effect of all forces become clear by…

Q: Part A A 2.0-cm-diameter parallel-plate capacitor with a spacing of 0.50 mm is charged to 200 V.…

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Q: Four resistors, R1 = 100 N, R2 = 250 N, R3 = 350 n and R4 = 200 N are connected such that the…

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Q: Ф (Wb) 4.0 2.0 20 30 40 - t (s) -2.0 -4.0- A. What is the magnitude of the induced current at t=5…

A: Current induced is induced emf upon resistance So induced current depends on induced emf.…

Q: Question 10 km/s is equal.. 18: (a) 10 m/s (d) 10000 m/s (b) 100 m/s (c) 1000 m/s Question

A: Please note : As per answering guidelines I can answer the first question only. Since, this is not a…

Q: Neutron is a neutral particle with a mass of 1.67x10^-27 kg. Compute the de Broglie wavelength for…

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.