A ball is thrown downward from the top of a building with an initial speed of 25 m/s. It strikes the ground after 2.0 s. How high is the building, assuming negligible air resistance?   A) 20 m   E) No answer   D) 70 m    C) 50 m   B) 30 m

Q: 5. A box-shaped piece of concrete measures 3 ft by 2 ft by 0.5 ft. (a) What is its weight? (b) Find ...

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Q: 10. The maximum wavelength for photoelectric emission in tungsten is 230 nm. What wavelength of ligh...

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Q: в (15.0 m) D (10.0 m) 30.0 53.0 25.0 Č(12.0 m) Ä (8.00 m)

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Q: A 490 kg rocket sled can be accelerated at a constant rate from rest to 1500 km/h in 2.1 s. What is ...

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Q: A body loses 392 J of potential energy in falling through 5 m. If the gravitational acceleration is ...

A: Express the relation for the potential energy lost by the body. PE=mgh Here, PE is the potential ene...

Q: . Which of the following statements is true for the experimental findings on photoelectric effect?

A: Emission of electron when light of suitable frequency falls on metal surface is called photoelectric...

Q: A force of 100 N is used to raise a 10.0kg box from rest on the ground to rest on a nearby shelf 2.0...

A: Given  Force F=100N  Distance d=2m  

Q: The figure shows the light intensity on a screen behind a single slit. The wavelength of the light i...

A: Given:  wavelength of the light = 510 nm =510×10-9m Distance between screen and slit (D) =1.3 m In t...

Q: An ideal transformer has 600 turns on its primary side and 100 turns on its secondary side. The prim...

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Q: The linear density of a string is 1.6 × 10-4 kg/m. A trans- verse wave on the string is described by...

A: The given data   The linear density of the string μ = 1.6×10-4 kg/m  and given wave equation is y = ...

Q: 6) The graph in the figure shows the position of a particle as it travels along the x-axis. x (m) 4....

A: This is a x(m) - t(s) graph which is also called as position time graph.  As the body is moving on x...

Q: The Earth makes one full rotation about its axis in approximately 24 hours, or 86,400 s. It rotates ...

A: please post the remaining question again for the answer. maximum three subparts will be asnwered.

Q: 2. A person leaving home travels 15 m [E], then 21m [N], and finally 8.0 m [W]. What was the person'...

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Q: Figure 27.6 shows a ray of light PQ striking a mirror AB. The mirror AB and the mirror CD are at rig...

A: 1. Angle of incidence: It is the enclosed angle betwen the incident ray and normal to the mirror. 2....

Q: A mass is sliding on a frictionless surface with a speed v. It runs into a linear spring with a spri...

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Q: The length of the position vector r is 240mm. Determine the rectangular components of vector a and t...

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Q: Two thin lenses with focal lengths of magnitude 15.0, the first is diverging and the second convergi...

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Q: 3. Compute the individual and total values of the capacitance connected in SERIES the charge , and t...

A: Given : C1 = 2.15×10-12 F C2 = 1.41×10-12 F C3 = 1.03×10-12 F∆V = 1000 Volts   

Q: 2. Three charges line vertically respectively (given q1), (given q2), (given q3). qland q2is separat...

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Q: A helium-neon laser operates at the threshold limit, mirror reflectivity coefficient (0.999 & 0.95),...

A: Given-Length of tbe laser L=50cmActive medium gain GA=1.02Reflection coefficient of mirrorR1=0.95R2=...

Q: You have an equilateral triangle, and it happens you place three changes 14C, -66C, 46C on each vert...

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Q: A string 2m long has a mass of 1.2kgX10^-4 kg and is stretched by a force of 100N. (a) What is the ...

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Q: At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2m/s^2. (a) How ...

A: The velocity of runner at the end of race (u) = 9 msAcceleration (a) = - 2 ms2time (t) = 5 s  

Q: Discuss how surfactants remove dirt, oil, or stain.

A: The answer is below

Q: What is the relationship between the speed a car is traveling and its braking distance?

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Q: Determine Vo using kirchoff's laws

A: Equivalent resistance of the circuit is given by:- 1Req=15+11+10Req=5516kΩORReq=3.4375 kΩ

Q: At time t=​0, a particle is located at the point ​(2​,5​,5​). It travels in a straight line to the p...

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Q: An aluminum specimen 15 in long and in in diameter is subjected to tensile stress. The new length of...

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Q: A freezer sustains a cold environment of -32°C and exhausts its heat at 39°C. Assume a Carnot cycle....

A: The given data   The initial temperature T1 = -32°C = -32+273 = 241 K The final temperature T2 = 39°...

Q: An electric water heater uses 13 amperes of current when plugged into a 110-volt outlet. How much re...

A: Given : Current (I) = 13 Ampere and volt (V) = 110 volt We know that, ohm's law is given by         ...

Q: Show your step by step solutions. 6. With a wooden ruler, you measure the length of a rectangular pi...

A: length of rectangular sheet = 16 mm width of rectangular sheet = 5.98 mm

Q: What makes electricity dangerous. The high current or the high voltage. Explain.

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Q: m Q6. A 6.0 kg block is sliding to the east across a horizontal, frictionless surface with a momentu...

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Q: at are the differences between characteristic X-rays and continuous x-ray spectrum? How are they p

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Q: May two conductors each of the same material and equal volume have different resistances? Explain an...

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Q: One hectare is defined as 1.000x10ª sq. m. One acre is 4.356x10ª sq. m. How many acres are in one he...

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any sp...

Q: A motorist travels 160 km at 80 km/h and 160 km at 100 km/h. What is the average speed of the motori...

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Q: Write a description of the following: A. Constructive interference B. Destructive interference

A: When two waves traveling in the same medium combine/ superimpose resulting in a net effect wave, thi...

Q: An object has an instantaneous acceleration of a(t) =(t^2) m/s^2. At t=3 s, find it's position.

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Q: An airplane flies 200 km due west from city A to city B and then 275 km in the direction of 36.0° no...

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Q: a box of books weighing 30-kg is pushed across the floor of an apartment by a force of 300 n exerted...

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Q: The average pressure hydrostatic force, Fa, acting on the surface of a submerged object acts on a lo...

A: Given The average pressure hydrostatic force,Fa, acting on the surface of a submerged object   Conce...

Q: 6. A car and a truck are each traveling at 70 ft/s, and the car is 75 ft. behind the truck. The car ...

A: Given that:- Initial seperation between car and truck is 75ft(Car is behind the truck)

Q: 1. The current north magnetic pole is near the geographic North Pole, but they are not in exactly th...

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Q: 9) What is the total initial acceleration of a tether ball on a 2.0 m rope whose angular velocity ch...

A: Given, Initial angular velocity, ωi = 13 radsfinal angular velocity, ωf = 7.0 radstime taken, t = 15...

Q: To uncharge a positvely charge particle by remove some protons on it. remove some electrons on it. p...

A: charge on a given particle = positive Aim : To uncharge the particle  

Q: Which of the following statements, if any, involves a vector? a. I walked 2 miles along the beach. b...

A: A vector is a quantity which is specified by its magnitude and as well as its direction. For ex:-for...

Q: A runner hopes to complete the 10,000 m run in less than 30 min. After running for constant speed at...

A: Constant speed(u) of runner is given by:- u=10,000-110027u=329.63 m/minu=5.5m/sec

Q: What is the specific heat at constant pressure for N, gas? Assume that N, is an ideal gas. а. 3R/2 b...

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Q: A 25 kg box is on a 35° hill with a coefficient of friction of 0.1. Determine its acceleration.

A: Given,   mass = 25 kg