0. You stand on a scale riding in an elevator at a constant upwards acceleration of 43g (13.07 m/s2). If your mass is 50 kg, what does the scale read? 163 N 1143 N 653 N 490 N.

Q: A box is released from rest at the position shown. Determine its speed (m/s) after traveling 2.3s al...

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Q: Water waves with an amplitude of 0.80cm and a wavelength of 2.5cm go through two openings in a barri...

A: Given, A = 0.80cm λ = 2.5 cm a = 1.2 cm d = 12.0 cm The expression for the constructive interference...

Q: 2. Determine the miller indices for the plane given in the figure.

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Q: 1. How much heat is needed to raise the temperature of a 3 kg of aluminum 8 K?

A: Data Given ,  Mass of the aluminium ( m ) = 3 kg Temperature change ( ∆t ) = 8 K

Q: 4. A mass m is on a frictionless incline that makes an angle 0 with the horizontal. Let m = 25.0 kg ...

A: Given,mass of the block, m = 25.0 kgθ = 30.0°

Q: A 2pC charged particle is moving with a speed of 10 m/s. When would it experience a greater magnetic...

A: We know that the magnetic force due to the charge (q) moving with velocity (v) at an angle(θ )to the...

Q: Two toboggans are connected by a rope. The first toboggan has a mass of 60 kg and the second has a m...

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Q: An isolated very long metallic rod with a uniform circular cross section of radius 0.55 mm has a co...

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Q: Four charges form an isosceles trapezoid: Q1 = +2C is located at vertex X; Q2 = -3C is located at ve...

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Q: 10. A rollercoaster is at the inside top of a a circular loop of radius R=150m. How fast must the ro...

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Q: ... 2.12 x 1014 protons and 3.55 x 1016 electrons; the charge on this object is Coulombs.

A: Given : Number of protons (np )= 2.12 x 1014  Number of electrons (ne )= 3.55 x 1016

Q: A 1000-kg car is slowly picking up speed as it goes around a horizontal unbanked curve whose radius ...

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Q: An electric heater carries 12A at 110V, is submerged in 22.5lbs of water for 30minutes. What will ...

A: Power supplied =IV=12×110=1320 W Hence energy supplied =1320×t=1320×30×60=2376000 Joules specific he...

Q: The position of a particle moving along an x axis is given byx- 12 n - 2.00r, where x is in meters a...

A: Here, we calculate the given as follow;

Q: traffic light that has a mass of 10kg is suspended by two wires as shown. What is the tension in two...

A: Given value--- mass = 10 kg. We have to find--- tension in both wire ?

Q: A ball is thrown with an initial velocity of 100m/s at an angle of 40o above the horizontal. a. How...

A: Given data:  Initial velocity (v0) = 100 m/s Angle (θ) = 40° above the horizontal Required: Horizont...

Q: A 15-kg block is lifted vertically 10 meters from the surface of the earth. To one significant figur...

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Q: Based on stellar nucleosynthesis, which heavy element is formed from silicon fusion?

A: based on stellar nucleosynthesis, the helium burns to produce havier elements then continues for 1 m...

Q: 4. Two masses m, = 5kg and m2 = 10kg have velocities V1 = 2 m/s in the +x direction %3D and v2 = 4 m...

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Q: What is the final temperature of a 3.4 kg iron at 45°C, if 5000 calories of heat was released, if th...

A: Given data:  Mass (m) = 3.4 kg = 3400 g Initial Temperature (T0) = 45°C Change in heat energy (ΔQ) =...

Q: Express the following in scientific notation and indicate how many significant figures each has. a. ...

A: Scientific notation and indicate how many significant figures each has. a. 5780.0 b. 0.008401 c. 29....

Q: Figure below is a graph that shows the velocity of an object along a straight line plotted against t...

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Q: Various options have been provided as possible answers to the following question Choose the answer a...

A: 1.1  We know that wavelength×frequency = wave speed  And frequency = 1/Period   

Q: Three charges Q1, Q2 and Q3 are arranged in a straight line. The force of attraction between Q1 and ...

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Q: Part A An electron (mass m = 9.11 x 10-31 kg) is accelerated from the rest in the uniform field E (E...

A: Initial velocity (u)=0 Let the Final velocity be (v) Electric field (E)= 1.45× 10⁴ N/C Mass of the e...

Q: As frequency increases a) wavelength increases b) energy increases c) wavelength decreases d) spe...

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Q: Figure below is a graph that shows a displacement of an object along a straight line plotted against...

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Q: Write a description of the reaction force for each of the following forces. (a) When a football pla...

A: reaction force is equal and opposite in direction.

Q: A child is holding a string with a ball tied at the end. The child spins around in a circle causing ...

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Q: A 100 L glass is filled with mercury at 20 degree celsius temperature upto brim. If the temperature ...

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Q: What is the spring potential energy stored in a spring with a spring constant of 678N/m when it is c...

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Q: Light travels from crown glass into air. (Refer to Table 1 for the indexes of refraction.) The angle...

A: Given: Angle of refraction r=60° Refractive index of crown glass μ1=1.523 Refractive index of air μ2...

Q: fig 5 10tm Me= In Figure 5. the electron on the right side is fixed. and the one on the left side ha...

A: Given Initial separation between the electrons (Ri) = 10-8 m Initial velocity of first electron = 0 ...

Q: A 19.3g mass of gold in the form of a cube is 1cm long on each side( somewhat smaller than a sugar c...

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Q: Given data : Current=6 Ampere Resistance =2 Ohms Find Voltage

A: Given data : Resistance=R Current=i   Required: Voltage

Q: If the horizontal distance reached by the projectile is 150 m, find its minimum velocity at the poin...

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Q: A charge of 12 C when placed in electric field experiences a force of 648 N. What is the magnitude ...

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Q: by jet backpacks, push and guide a 120 kg asteroid toward a processing dock, exerting the forces sho...

A: Given  F1 = 32 N  F2 = 55 N  F3 = 41 N   The angle for F1 from +x axis is 30°  The for F3 from +x ax...

Q: 4. A small plastic box with a mass of 0.300 kg revolves uniformly in a circle on a horizontal fricti...

A: Given: Mass (m) = 0.300 kg  Radius (r) = 0.150 m  Angular velocity ( w)= (2 π x 2 ) rad/s      

Q: Given data : Current=5 Ampere

A: Ohm's law - Ohm's law states that voltage between any two point on conductor is proportional to the ...

Q: "A board that is 20.0 cm wide, 5.00 cm thick, and 3.00 m long has a density 350 kg/m3. The board is ...

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Q: Would an object dropped three times from the same height would hit the ground at the same time?

A: Since, for a freely falling body which is dropped from height(h) and takes time(t) to reach the grou...

Q: Reddish light of wavelength 6.0 X 10-7 m passes through two parallel slits.Nodal lines are produced ...

A: Given  Wavelength = 6.0*10-7 m  Screen distance,D = 3.0 m  Distance between first and tenth nodel li...

Q: A particle moving along the positive X-axis at 3 m/s accelerates at 2 m/s2 in the direction of the ...

A: Initial velocity = 3 ms along + x axis Acceleration = 2 ms2 along +y axis time (t) = 2 seconds   

Q: Referring to the figure shown, water contained in a piston–cylinder assembly, initially at 100 kPa a...

A: initially at 100 kPa and 25°C. temperature T 320°C. We have to final pressure. Answer is P3 = 13.3b...

Q: What is the coefficient of friction for a 30 kg block decending a 55 degrees inclined at a constant ...

A: Given: Mass of block =30 kg Angle of incline = 55ο  

Q: 1.6 The power provided by a centrifugal pump is given by P = mgh, where m is mass flow rate, g is th...

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Q: 6. A 10.0-Hz waterwave travels from deep water, where its speed is 38.0 cm/s, to shallow water, wher...

A: Given: Frequency of waterwave, f=10.0 Hz Speed in deep water, vd=38.0 cm/s Speed in shallow water,vs...

Q: The massless spring of a spring gun has a force constant k = 12.5 N/cm. When the gun is aimed vertic...

A: force constant = K = 12.5 N/cm = 1250 N/m mass = m = 10 g = 0.01 kg height = h = 5 m

Q: Given that the work function of Na metal is 1.82 eV, what is the threshold frequency of Na? NEED ANS...

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!