A 23 kg child goes down a straight slide inclined 38° above horizontal. The child is acted on by his weight, the normal force from the slide, kinetic friction, and a horizontal rope exerting a 30 N force as shown in Figure. How large is the normal force of the slide on the child?

Q: The hydraulic lift's small piston with an area of 30 m^2 is subjected to a force of 100 N. To have…

A: Data provided:   Area of small piston (A1) = 30 m2 Force on small piston (F1) = 100 N Force on large…

Q: to the wall by a

A: given:

Q: A charge QI = 3.0x10-9 Coulombs located in xy plane at a coordinate of (0, 3meters) and a charge QII…

A: Electric field = vector sum of fields due to each charges.

Q: Two resistors are connected in parallel as shown in the figure. What is the value of Rand IT? + VT =…

A: Here, the resistors are connected in parallel. We need to find the equivalent resistance of the…

Q: 2. Consider a river flowing toward a lake at an average speed of 4 m/s at a rate of 500 m3/s at a…

A:

Q: Calculate the power delivered to each resistor in the circuit shown 2.00 Ω Μ -3.00 Ω 1.00 Ω 18.0 V Μ…

A:

Q: A piece of aluminum whose mass is 10 kg has a specific heat capacity of 900 J/kg×°C and is warmed by…

A: Given: mass of the aluminum (m) = 10 Kg                 specific heat capacity of aluminum (c) =…

Q: 3/56 A "swing ride" is shown in the figure. Calculate the necessary angular velocity for the swings…

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Q: 4. The volume and the average density of an irregularly shaped body are to be determined by using a…

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Q: A car is traveling south at 30 km/h. it rounds a curve, and 6 s later it is traveling west at 30…

A:

Q: Mark Lee hits a baseball and it leaves the bat at a speed of 30 m/s at an angle of 25 degrees above…

A: Equation of motion V^2 - u^2 = 2as a= acceleration = 9.8m/s^2 u= initial speed = 30sin(25°)  V=…

Q: A 5-kg sled has a potential energy of 6500 J at position A above the ground. When the sled strikes…

A: Answer:-  Given  Potential energy (P.E) = 6500 J  Mass(m) = 5 kg  Velocity (V) = ?  We know that  By…

Q: of these wave ir, what displa threshold, wh

A:

Q: A sprinter with a mass of 55 kg is running at a speed of 3.8 m/s. In a burst of speed to win the…

A:

Q: A piece of aluminum whose mass is 10 kg has a specific heat capacity of 900 J/kg×°C and is warmed by…

A:

Q: How much heat is released by a system when 159 J of work is done on it to decrease its energy to 67…

A: We have change in internal energy dU=-87 J (Negative because decrease is mentioned) due to work done…

Q: A rotating disk with an angular velocity of 3 rev/s is brought to rest in 12 seconds by a constant…

A:

Q: Find distance covered by car Speed=23.5 km/hr Time=2 hr

A: Given data : Time=t Speed=S   Required : Distance

Q: Given two vectors: The magnitude of 2Ñ - Mis A) 6.08 B 7.07 C 39.2 D) 202 M = -3î+61-5k and Ñ = -2î…

A:

Q: Determine the final velocity of car U=13.2 m/s a=2.34 m/s2 t=3 s

A: Required : With help of initial velocity , acceleration and time . We have to compute the final…

Q: Consider an equilateral triangle 123 having each side length equal to 0.2 m. Let the uniform point…

A:

Q: Jennie rides a yacht traveling west at a velocity of 15 m/s across a river that is flowing northwest…

A: Here it is asked for the magnitude only. Velocity is a vector quantity, using their magnitude and…

Q: What is the electrostatic force of attraction between 2 positively charged particles separated by…

A: Given data:  Distance (r) = 0.30 m Charge (q1) = 8.0×10-6 C Charge (q2) = 5.0×10-6 C Required: The…

Q: A cart X with a mass of 4 kilogram is initially moving at 5 meters per second. It collided with cart…

A:

Q: What is the electrostatic force of attraction between 2 positively charged particles separated by…

A: Charges Q1 = 8.0 ×10-6 c Q2 = 5.0 ×10-6 C Distance between  two charges(r) = 0.30 m

Q: A driver applies the brakes on his car reducing its speed from 31.0 m/s to 11.0 m/s in a time 5.0…

A: We  know thata=Vf-VitHerea=Magnitude of average accelerationVf=Final velocityVi=Initial…

Q: Consider the circuit shown below. Find I 10.0 Ω 25.0 V b 5.00 Ω 10.0 Ω 5.00 Ω : 20.0 Ω

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Q: Q2/a/ Two parallel plates AB are insulated by vacuum with a distance of 5 cm between them. An…

A: Given that- Distance b/w plate(d)=5cm=0.05m Voltage(V01)=500 volt Potential difference both…

Q: 3/42 For what value(s) of the angle will the acceleration of the 80-lb block be 26 ft/sec² to the…

A:

Q: Find pressure Force-0.25 N Area 0.2 m2

A: Given data : Force=F Area=A   Required : Pressure

Q: Find the resistance Voltage=22 V Current 3 A

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

Q: ad loss in the turbine

A:

Q: The Golden Gate Bridge is said to be 1275m long at -15°C. Assuming that the bridge is made entirely…

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Q: Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure. If a…

A:

Q: Consider an equilateral triangle 123 having each side length equal to 0.2 m. Let the uniform point…

A:

Q: 5-kg sled has a potential energy of 6500 J at position A above the ground. When the sled strikes the…

A: Given  potential energy (U)=6500 J mass(m)=5 kg

Q: Mark Lee hits a baseball and it leaves the bat at a speed of 30 m/s at an angle of 25 degrees above…

A:

Q: a tank of water and its center

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Q: The 20 kg crate as shown in Figure Q2 is subjected to a force with direction and magnitude P = 200…

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Q: The motion of a crate can be divided into two stages. Stage 1 (A-B): The crate with mass m = 4 kg is…

A:

Q: Determine the decay constant for iodine given its half life is 8.04 days. If a patient has ingested…

A: Given Half life(T1/2)=8.04 days Required decay constant(λ)=? Time taken to drop the activity from…

Q: What is the electrostatic force of attraction between 2 positively charged particles separated by…

A: Given:  q1 = 8×10-6 Cq2 = 5×10-6 Cr = 0.3 m

Q: A cart X with a mass of 4 kilogram is initially moving at 5 meters per second. It collided with cart…

A: mass of cart x = 4 kg mass of cart y = 6 kg initial velocity of cart y = 0 m/s initial velocity of…

Q: Suppose you move a 15-kg crate by pulling upward on the chain at an angle of 45 degrees above the…

A: mass of crate (m) = 15 kg θ = 45 degree a = 0.5 m/s2Let the tension = T μk = 0.56

Q: Find acceleration U=2.22 m/s V=2.84 m/s t=2s

A: Given : U = 2.22 m/s V = 2.84 m/s t = 2 s

Q: Find pressure Force=0.99 N Area=1 m2

A: Pressure is the force applied perpendicular to the surface of an object per unit area over which…

Q: VT = 150V IT = ? RT =? (A) RT=81 ohms; IT = 1.15 Amp B RT=81 ohms; IT = 1.85 Amp RT = 344 ohms; IT =…

A: Given Voltage of the battery is VT=150 V Voltage across R1 is V1=150 V Resistance of R1 is R1=130 Ω…

Q: A car with arrangement for water flow is attached to the wall by a spring as shown in figure below.…

A:

Q: What is the electrostatic force of repulsion between 2 positively charged particles separated by…

A: we have for electrostatic force F=kq1q2r2

Q: Mark accidentally dropped a ball from a building. After 6 seconds, the ball reaches the ground.…

A: First law of motion  S= ut + (1/2) at^2 t= time = 6s a = vertical acceleration = 9.8m/s^2 u= initial…

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.