Physics

A mail carrier leaves the post ofce and drives 2.00 km to the north. He then drives in a direction 60.0 south of east for 7.00 km. After dropping off a package, he drives 9.50 km 35.0 north of east to Starbucks. What is the direction relative to the positive x axis?
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What does the standard deviation of a set of data tell you?OA. The number of experiments that were performedOB. How many data points there are in the setOC. The largest and smallest data values of the setOD. How much each data point differs, on average, from the meanvalue of the setSUBMIT
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According to a simplified model of a mammalian heart, at each pulse approximately 20 g of blood is accelerated from 0.25 m/s to 0.35 m/s during a period of 0.10 s. What is the magnitude of the force exerted by the heat muscle?
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A piece of cork has a volume of 10 cm cube. find the net force on the cork if it is completely submerged and then released. (density of cork=200kg/m^3)
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A rhinoceros is at the origin of coordinates at time t1 = 0. For the time interval from t1 = 0 to t2 = 12.0 s, the rhinos average velocity has x-component - 3.8 m/s and y-component 4.9 m/s. At time t2 = 12.0 s, (a) what are the x- and y-coordinates of the rhino? (b) How far is the rhino from the origin?
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While in flight, a hot air balloon decreases its elevation by 83 meters and then increases its elevation by 83.7 meters,Enter an inequality in the ber to compare the changes in elevation of the hot air balloon while in flight. this is math that i dont get pls help
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The weather is warm and dry.Which change would a cold front bring?
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To how many significant figures should each answer be rounded? Equation: A: ( 6.626 x 10^ 34 J * s ) ( 2.9979 x 10^8 m / s ) / 4.630 x 10^ 7 m = 4.290299222462 x 10^ 19 J ( unrounded ) 1. After rounding, the answer to equation A should have __________.
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Some plants disperse their seeds when the fruit splits and contracts, propelling the seeds through the air. The trajectory of these seeds can be determined with a high-speed camera. In an experiment on one type of plant, seeds are projected at 20 cm above ground level with initial speeds between 2.3 m/s and 4.6 m/s. The launch angle is measured from the horizontal, with + 90 corresponding to an initial velocity straight up and 90 straight down.If a seed is launched at an angle of 0 with the maximum initial speed, how far from the plant will it land? Ignore air resistance, and assume that the ground is flat. (a) 20 cm; (b) 93 cm; (c) 2.2 m; (d) 4.6 m.
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According to the animation, in the first half of the lunar cycle, the waxing, bright part of the moon appears on the ____ side of the Earth. After full moon when the moon is waning, the illuminated part of the moon appears on the ______ side.
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My sling shot shoots pellets at 50m/s. Find two angles of elevation that can be used to hit a target 65m away. (Assume air resistance is negligible. Assume the gravitational constant ????=10m/s2 for this problem.)
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what might be happening since 1880 for average global temperatures to increase
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The amplitude of a sound wave is measured in terms of its maximum gauge pressure. By what factor does the amplitude of a sound wave increase if the sound level goes up by 26.0 dB?
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Will mark Brainlist!Which of the following is an example of a wheel and axle? A. wheel barrowB. automobile steering wheelC. jar lidD. pencil
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You are standing in an elevator that is accelerating upward at 2 m/s2. What is the normal force acting on you by the elevator if your mass is 70 kg?
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A police car in a high-speed chase is traveling north on a two-lane highway at 35.0 m/s. In the southbound lane of the same highway, an SUV is moving at 18.0 m/s. Take the positive x-direction to be toward the north. Find the x-velocity of the police car relative to the SUV.
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What key ingredient in the modern condensation theory was missing or unknown in the nebula theory?
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Find the sum of the vectors:10km west.5 km south
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1. Our entire solar system orbits around the center of the Milky Way Galaxyabout once every 230 million years. 2. The Milky Way and Andromeda galaxies are among a few dozen galaxies that make up our Local Group. 3. The Sun appears to rise and set in our sky because Earth orbitsonce each day. 4. You are one year older each time Earth rotatesabout the Sun. 5. On average, galaxies are getting farther apart with time, which is why we say our universeis expanding. 6. Our solar systemis moving toward the star Vega at about 70,000 km/hr.
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Where is the input forcein the use of this simplemachine?A. The feet planted in the snowB.The shovel liftedC. The gravity pushing down onthe snowD. The hands on the shovel
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A Honda Civic travels in a straight line along a road. Its distance x from a stop sign is given as a function of time t by the equation x(t)= t2 t3, where = 1.53 m/s2 and = 4.80102 m/s3. Calculate the average velocity of the car for each time interval:_______. a) t = 0 to t = 2.00 s.b) t = 0 to t = 4.00 s.c) t = 2.00 s to t = 4.00 s.
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A small block has constant acceleration as it slides down a frictionless incline. The block is released from rest at the top of the incline, and its speed after it has traveled 6.00 mm to the bottom of the incline is 3.80 m/s.What is the speed of the block when it is 3.00 m from the top of the incline?
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The electric field near the surface of Earth points downward and has a magnitude of 152 N/C. What is the ratio of the magnitude of the upward electric force on an electron to the magnitude of gravitational force on the electron?
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Xenon fluoride can be prepared by heating a mixture of Xe and F2 gases to a high temperature in a pressure-proof container. Assume that xenon gas was added to a 0.25 liter container until its pressure reached 0.12 atm at 0.0C. Fluorine gas was then added until the total pressure reached 0.72 atm at 0.0C. After the reaction was complete, the xenon was consumed completely, and the pressure of the F2 remaining in the container was 0.36 atm at 0.0C. What is the empirical formula of the xenon fluoride?
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