3. A car traveling at 90 kph is passed by a second car going in the same direction at a constant speed. After 30 seconds, the two cars are 500 meters apart. Find the speed of the second car.

Q: (b) If its' owner uses 3 pipes of radius 4cm, with water flowing at a rate of 30cm/s, how long will…

A: (a) Area of circuler face= pi*r2  =pi*102 = 314 cm2.                    (pi=3.14)

Q: Two different measurements are made on 1,000 husbands and their wives. If measurements of husbands…

A:

Q: What is the magnitude of the electrostatic force between a singly charged sodium ion (Na*, of charge…

A:

Q: 1. Two planes leave at the same time. One flies west at 300km/hr. the other flies east at 450 km/hr.…

A: Speed of plane 1:  s1 = 300 km/hr Speed of plane 2:  s2 = 450 km/hr

Q: At noon, ship A is 150 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing…

A: distance between the ship A and B is 150 km speed of ship A is 35km/h so at time t, the distance…

Q: A man 6 feet tall walks at a rate of 4 feet per second away from a light that is 15 feet above the…

A: Please see the explanation below

Q: 2. Which is equal to sec 36°? Csc 54° sec 54° Csc 36° sec 126°

A: We have to choose correct option and here using trignometry ratio

Q: If a car leaves at 7 a.m. on a long trip, traveling at 44 kph and a second car leaves at 11 a.m.…

A:

Q: The A string on a violin has a fundamental frequency of 440 Hz. The length of the vibrating portion…

A: Given :Length of the vibrating portion = 32.8 cmMass= 0.343 gLength= 32.8 cm

Q: A Plane (Plane A) travels North at a speed of 800 kph. after 15 minutes, another plane (plane B)…

A: Planes are moving same direction :

Q: A resistance of 10 ohms and inductance of 4 henry is connected in series with a 12 volts battery.…

A:

Q: If two equal charges, each of 1 C, were separated in air by a distance of I km, what would between…

A:

Q: Two boats leave a port at the same time: one travels west at 20 mi/hr and the other travels south at…

A:

Q: 13. A baseball is batted at a height of 1 m above the ground and reaches a maximu height of 33 m at…

A: Given that height=1m Maximum height=33m Horizontal distance=4m

Q: A metal sphere cools from 60°C to 50°C in 5 minutes. How much more time (in minutes) will it take to…

A:

Q: A ladder 40.2 ft long is leaning against an embankment inclined 70.4° to the horizontal. If the…

A:

Q: If the velocity of a moving object is v(t)=t-2/t^2 in meters per second, then what is its…

A:

Q: The dimensions of a rectangular block of wood are found to be 100,120 and 200mm, with a possible…

A: Let's find greatest error in the surface area of the rectangular block.

Q: A snail slid 7 cm down a stalk and climbed 5 cm back up. Hlow far was the snail below its original…

A: Given : A snail moves 7 cm down then moves 5 cm up.

Q: A car traveling at 60 feet/sec decelerates at a constant rate so that it comes to a complete stop…

A: Initial velocity is equals to 60 ft./s

Q: 2. A airplane, flying with the wind, took 2 hours to travel 1000 km and 2.5 hrs in flying back. What…

A:

Q: From a point 5.0 miles due north of aradio antenna, a hiker walks 2.0 mi west.The antenna is now S…

A: This is a simple word problem of right triangle. Before starting anything we need to draw a labeled…

Q: Two people on bikes are separated by 350 meters. Person A starts riding north at a rate of 2m/sec…

A: Given: Two people on bikes are separated by 350 meters. Person A starts riding north at a rate of…

Q: A curved concrete road will accommodate traffic traveling s mph if the radius of the curve is r…

A:

Q: One ship is sailing south at a rate of 5 knots, and another is sailing east at a rate of 10 knots.…

A: Given that at time 2 p.m the second ship is at the place occupied by the first ship one hour before.…

Q: Car A is 40 km east of Car B and begins moving west at 40 km/h. At the same moment, Car B begins to…

A: Answer is in below steps.

Q: 9. At noon, ship A is 160 km north of ship B. Ship A is sailing south at 40km/h and ship B is…

A: Given Ship A is 160 km north of ship B Ship A is sailing south at 40Km/h and ship B is sailing east…

Q: At noon, ship A is 170 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing…

A:

Q: A wheel has a diameter of 100 centimeters. If the wheel is supporting a cart moving at 45 kilometers…

A:

Q: 8. A boy on a bike rides north 5 miles, then turns east. If he rides 10 mi/hr., at what rate was his…

A: Given: The following diagram represents the given data:

Q: At noon, ship A is 50km  west of ship B. Ship A is sailing south at 40km/h  and ship B is sailing…

A:

Q: A 2.63-kg steel ball is dropped from a plane to an ocean. If the velocity of the ball just before…

A:

Q: At noon, ship A is 180 km west of ship B. Ship A is sailing east at 40 km/h and ship B is sailing…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: At noon, ship A is 170 km west of ship B. Ship A is sailing east at 40 km/h and ship B is sailing…

A: In this question we have to find how fast is the distance between the ships is changing at 4:00 PM.

Q: A ball is thrown at an downward angle of 36.3 deg. from the horizontal at 43.4 m/s from a height of…

A: Explanation: Given that,  h = 36.9 m Downward angle: θ=36.3° vo=43.4 m/s   Concept Used: Horizontal…

Q: Two people start from the same point. One walks east at3 mih and the other walks northeast at 2 mih.…

A: Given dcdt=3mi/hdbdt=2mi/ht=15min=1560=0.25hr

Q: 5. A farmer desires to irrigate a border which is 12 m wide and 150 m long. He wants to apply an…

A: Given: Width = 12 m Length = 150 mdepth of water=75mm =0.075mDischarge of stream  =60 l/sec

Q: Two cars start moving from the same point. One travelssouth at 60 mih and the other travels west at…

A:

Q: A man 6 feet tall walks at a rate of 3 feet per second away from a light that is 15 feet above the…

A:

Q: two cars live in town and travel in opposite directions. one car travels at the rate of 45 kph and…

A: Given One car speed = 45 kphother car speed = 55kph

Q: How fast is the distance between the range finder and the balloon increasing (in meters per minute),…

A:

Q: A ball is thrown vertically into the air at a velocity of 180 ft/sec. After 5 seconds, another ball…

A:

Q: A car traveling at 60 ft/sec begins decelerating (time is zero here, as is position) at a constant…

A:

Q: 1) Find the approximate distance that will be saved by walking diagonally across a field 450 meters…

A: Given: For a field lengthl and breadthb are respectively 450m and  250m We know that for a…

Q: If a 250 meters long train is traveling at an average speed of 60 kph, how long it would take that…

A: According to the question, Speed of train 60 kph To convert the speed of train in meter per second,…

Q: Two people start from the same point. One walks east at3 mi/h and the other walks northeast at 2…

A:

Q: 6 ven cos a = wh 15'

A: Use inverse trigonometric ratio

Q: 3. Solve the equation cosh 2x + cosh x 5, giving x to three dec. places. %3D

A: The given equation is cosh2x+coshx=5. Calculate the solution of x to three decimal places.   Here we…

Q: find the rate at which the area is increasing

A: Given an isoscles triangle has a constant length of 4 ft. Angle Ø between these sides increases at…

Q: Ship A is 15 miles east of P and moving west at 20 mi/hr; ship B is 60 miles south of P and moving…

A: Given data: The speed of  A is dxdt=-20 mph. The speed of  B is dydt=15 mph. Position of A is xA=15…